Step by Step guid for CarbonROM? - Xperia Z2 Q&A, Help & Troubleshooting

Step by Step guid for CarbonROM? - Xperia Z2 Q&A, Help & Troubleshooting

Does somebody have a step by step guid to install this on my device?
I found this and this but I dont know if this can be used to install the rom on my device.
I just know you need to unlook your bootloader first before to do anything.
I already checked and my device can be unlooked.

Go ahead man those guides are just fine. This is what I did to install Carbon.
Read all the steps first then do it, and also definitely read the note* at the end
Write down your IMEI somewhere safe
Unlocked bootloader. Get unlock code from Sony's official site. Just Google it it's easy to find. Don't follow unofficial websites, apps.
Turn the phone off.
Hold down the vol-up button.
While holding, attach the usb cable, wait a few sec.
Release the button. On laptop issue the command
Code:
fastboot devices
(download the fastboot from here on the forum if not already). You should see you'r device serial number.
If not, instead of attaching usb cable use the power button to turn the phone on (nothing happens on the phone screen) then attach usb cable.
Issue the command
Code:
fastboot oem unlock 0xTHE_CODE_YOU_GOT_FROM_SONY
Reboot perhaps?
Code:
fastboot reboot
If you rebooted, go back to fastboot mode as described above.
Flash TWRP (recovery.img). Download it's image from here on the forum. Use the command
Code:
fastboot flash FOTAKernel recovery.img
Detach USB cable, reboot, turn the phone off.
Hold down the vol-down key and power key. Phone turns on, when you see sony logo, release the buttons. The phone boots into TWRP.
There's a backup button. Make a backup. DO IT!
Attach the usb cable. Transfer the backup to laptop.
Back to main screen, choose wipe. wipe everything, internal, system, blabla.
Transfer the carbon ROM to phone.
Choose what was it on twrp? install? flash? it's the first option.
Choose the zip file.
Look for open-gapps and magisk here on the forum. Install them just the way you installed the ROM if you wish.
Reboot. Phone might reboot itself while loading the carbon once or twice.
If you have wifi and network, congrats. if not, look for z2 baseband patch here on the forum.
Boot back into the TWRP, transfer the file to phone, flash it. Reboot. Hopefully you have network.
If you have not bricked the phone by now, congrats you have carbon on your phone, have your guaranty voided, and all your personal data wiped from the phone.
There's just one catch that after flashing the baseband, you get carrier network back but wifi stops working. Which I'm strggling to fix yet.
note*:
Before installing the carbon, after you have unlocked the bootloader, installed TWRP, and made a backup, on your laptop run the following commands to have your current firmware, in cast the baseband patch doesn't work:
While in the TWRP, go to mount section, mount the system.
On the laptop:
Code:
adb shell
cd /sdcard
cp -r /system/etc /sdcard
tar cf original_rom_etc_backup.tar /sdcard/etc
exit
Then transfer the original_rom_etc_backup.tar file created on the phone to your laptop and store it safely.
Later you can extract this file and chery pick the modem files and replace carbon modem firmware with the original see if yo get lucky :shrug

Related

[Tutorial] Root, Unlock, Recovery and flashing a Custom ROM

This is long, but it's nice for noobs because it's detailed. It's honestly kind of fun, I promise. I'm assuming you have WINDOWS. This is based off of the guide by torxx!. It's modified because some of the info is outdated (you don't have to flash the boot.mg separately, for example). If you are NOT a noob you can just look at the "overview" for each step. This will work with all versions of the HTC One, assuming the kernel works. I have only tested the kernel with the T-mobile variant because that's what I have.
UNLOCKING YOUR DEVICE WILL WIPE YOUR DEVICE. THIS IS A SECURITY FEATURE. BACKUP FIRST.
Part 1- gaining unlock token
Overview: go to htcdev.com and unlock bootloader
Be sure you've turned off fast boot option in power menu; usb debugging should be on (settings -> developer options).
Go to http://www.htc.com/www/software/htc-sync-manager/[1] and install HTC SYNC. Alternatively, if you know what you're doing, you can install these drivers:
x86 http://www.mediafire.com/?qabo1tue2v1ky75 x64 http://www.mediafire.com/?8dl8s3l9mr6ggr9
Go on http://www.htcdev.com[4] and create yourself an account on HTCDEV.
Download these adb/fastboot files: http://d-h.st/RvD
Make a new folder anywhere. We'll use C:/fastboot as an example.
Extract the zip downloaded to the new folder
Go Here http://www.htcdev.com/bootloader/[6] and select "All Other Supported Models" and "then begin unlock bootloader" (check the boxes, click proceed, all that good stuff). YOU CAN IGNORE THE DIRECTIONS THAT THEY TELL YOU (and follow this guide instead).
Power off your phone. Power your phone on by holding power and volume down.
Highlight 'Fastboot' the volume buttons then press power to "select".
Plug your phone into your PC and open a Command Prompt. (windows XP - Click Start > Run > type CMD in box then press OK; Windows 7 - Click Start > type CMD in search box then press Enter) Change directory to your folder where we put fastboot files by typing cd c:\fastboot for example.*
*Alternatively, you can just hold down shift and right click in the folder and select "open command window here". Neat huh?
Type this into your command prompt window: fastboot oem get_identifier_token
Select & copy the text as per step 9 on the HTCDev website
Paste your identifier token into the box at the bottom and submit
You Will Very Shortly Receive an email from HTCDev with a link to the second part of the instructions and your "Unlock_code.bin" attached
Download the "Unlock_code.bin" from the email and save it to the same folder that we extracted fastboot files
Type this into your command prompt window: fastboot flash unlocktoken Unlock_code.bin
The Display Will change on your phone, press Vol+ to accept and power to confirm.
Part 2
Overview: flash your recovery. Boot into recovery. Turn phone off if it boots into OS. Boot into back into recovery. You're done!
Download a recovery:
TWRP (the one I use): http://forum.xda-developers.com/showthread.php?t=2173870
CWM 2: http://forum.xda-developers.com/showthread.php?t=2172979
CWM: http://forum.xda-developers.com/showthread.php?t=2173863
Place the Recovery file to the folder where the fastboot.exe is.
Same thing as above- boot (volume down + power) into the bootloader and highlight 'Fastboot' the volume buttons then press power to "select".
Do the same thing as with the command prompt above. This time, however, you'll be typing:
fastboot flash recovery "name_of_the_recovery.img"
For example:
fastboot flash recovery openrecovery-twrp-2.5.0.0-m7.img
then type:
fastboot erase cache
From the menu, boot into recovery (use volume to move up and down, power to select). The phone might boot to the OS instead of recovery, don't worry!
Turn off phone then turn on (while holding volume down) to boot back into the bootloader.
TAMPERED shows up, boot into recovery and now your recovery should be working!
Part 3- obtaining root
Overview: flash a super tool
Download a super user tool for root:
SuperSU (I use this one): http://forum.xda-developers.com/showthread.php?t=1538053
SuperUser: http://download.clockworkmod.com/superuser/superuser.zip
Alternatively, download this: http://forum.xda-developers.com/showthread.php?t=2266025. This is a stock rooted rom for T-Mobile. If you download and flash this instead of the super user tool, you're done. (This rom includes super user)
Turn on your phone again (and disable usb debugging) and connect to computer, copy the .zip super user tool to a location you remember ON the phone.
Flash it with the Recovery: Power off your device and then hold the VOL DOWN + Power to boot into the Bootloader Navigate with VOL and Power to Recovery Now flash the .zip:
- install zip from sdcard
- choose zip from sdcard
- select the downloaded SuperSU/SuperUser zip file and flash it
- Reboot now
If you are a t-mobile user you're not out of the woods yet! The stock kernel is system write protected, so you still can't modify it (changes won't "stick"). You'll have to flash a custom rom or a kernel if you want stock instead.
I recommend these kernels: http://forum.xda-developers.com/showthread.php?t=2255900 or http://forum.xda-developers.com/showthread.php?t=2233665&highlight=menu
Download it.
Installing custom rom/kernel ("flashing a rom")
Overview: Download Rom, boot into recovery and wipe and then flash.
According to Shenye, even though your device is s-on, you can still flash boot now. So just do this:
Turn on your phone again (and disable usb debugging) and connect to computer, copy the .zip kernel/cutom rom to a location you remember ON the phone.
Flash it with the Recovery: Power off your device and then hold the VOL DOWN + Power to boot into the Bootloader Navigate with VOL and Power to Recovery Now flash the .zip:
- install zip from sdcard
- choose zip from sdcard
- select the downloaded SuperSU/SuperUser zip file and flash it
- Reboot now

ixrs said:
This is long, but it's nice for noobs because it's detailed. It's honestly kind of fun, I promise. I'm assuming you have WINDOWS. This is based off of the guide by torxx!. It's modified because some of the info is outdated (you don't have to flash the boot.mg separately, for example). If you are NOT a noob you can just look at the "overview" for each step. This will work with all versions of the HTC One, assuming the kernel works. I have only tested the kernel with the T-mobile variant because that's what I have.
UNLOCKING YOUR DEVICE WILL WIPE YOUR DEVICE. THIS IS A SECURITY FEATURE. BACKUP FIRST.
Part 1- gaining unlock token
Overview: go to htcdev.com and unlock bootloader
Be sure you've turned off fast boot option in power menu; usb debugging should be on (settings -> developer options).
Go to http://www.htc.com/www/software/htc-sync-manager/[1] and install HTC SYNC. Alternatively, if you know what you're doing, you can install these drivers: x86 http://www.mediafire.com/?qabo1tue2v1ky75 x64 http://www.mediafire.com/?8dl8s3l9mr6ggr9
Go on http://www.htcdev.com[4] and create yourself an account on HTCDEV.
Download these adb/fastboot files: http://d-h.st/RvD
Make a new folder anywhere. We'll use C:/fastboot as an example.
Extract the zip downloaded to the new folder
Go Here http://www.htcdev.com/bootloader/[6] and select "All Other Supported Models" and "then begin unlock bootloader" (check the boxes, click proceed, all that good stuff). YOU CAN IGNORE THE DIRECTIONS THAT THEY TELL YOU (and follow this guide instead).
Power off your phone. Power your phone on by holding power and volume down.
Highlight 'Fastboot' the volume buttons then press power to "select".
Plug your phone into your PC and open a Command Prompt. (windows XP - Click Start > Run > type CMD in box then press OK; Windows 7 - Click Start > type CMD in search box then press Enter) Change directory to your folder where we put fastboot files cd c:\fastboot*
*Alternatively, you can just hold down shift and right click in the folder and select "open command window here". Neat huh?
Type this into your command prompt window: fastboot oem get_identifier_token
Select & copy the text as per step 9 on the HTCDev website
Paste your identifier token into the box at the bottom and submit
You Will Very Shortly Receive an email from HTCDev with a link to the second part of the instructions and your "Unlock_code.bin" attached
Download the "Unlock_code.bin" from the email and save it to the same folder that we extracted fastboot files
Type this into your command prompt window: fastboot flash unlocktoken Unlock_code.bin
The Display Will change on your phone, press Vol+ to accept and power to confirm.
Part 2
Overview: flash your recovery. Boot into recovery. Turn phone off if it boots into OS. Boot into back into recovery. You're done!
Download a recovery:
TWRP (the one I use): http://forum.xda-developers.com/showthread.php?t=2173870
CWM 2: http://forum.xda-developers.com/showthread.php?t=2172979
CWM: http://forum.xda-developers.com/showthread.php?t=2173863
Place the Recovery file to the folder where the fastboot.exe is.
Same thing as above- boot (volume down + power) into the bootloader and highlight 'Fastboot' the volume buttons then press power to "select".
Do the same thing as with the command prompt above. This time, however, you'll be typing:
fastboot flash recovery name_of_the_recovery.img
For example:
fastboot flash recovery openrecovery-twrp-2.5.0.0-m7.img
then type:
fastboot erase cache
From the menu, boot into recovery (use volume to move up and down, power to select). The phone might boot to the OS instead of recovery, don't worry!
Turn off phone then turn on (while holding volume down) to boot back into the bootloader.
TAMPERED shows up, boot into recovery and now your recovery should be working!
Part 3- obtaining root
Overview: flash a super tool
Download a super user tool for root:
SuperSU (I use this one): http://forum.xda-developers.com/showthread.php?t=1538053
SuperUser: http://download.clockworkmod.com/superuser/superuser.zip
Alternatively, download this: http://forum.xda-developers.com/showthread.php?t=2266025. This is a stock rooted rom. If you download and flash this instead of the super user tool, you're done. (This rom includes super user)
Turn on your phone again (and disable usb debugging) and connect to computer, copy the .zip super user tool to a location you remember ON the phone.
Flash it with the Recovery: Power off your device and then hold the VOL DOWN + Power to boot into the Bootloader Navigate with VOL and Power to Recovery Now flash the .zip:
- install zip from sdcard
- choose zip from sdcard
- select the downloaded SuperSU/SuperUser zip file and flash it
- Reboot now
If you are a t-mobile user you're not out of the woods yet! The stock kernel is system write protected, so you still can't modify it (changes won't "stick"). You'll have to flash a custom rom or a kernel if you want stock instead.
I recommend these kernels: http://forum.xda-developers.com/showthread.php?t=2255900 or http://forum.xda-developers.com/showthread.php?t=2233665&highlight=menu
Download it.
Installing custom rom/kernel ("flashing a rom")
Overview: Download Rom, boot into recovery and wipe and then flash.
According to Shenye, even though your device is s-on, you can still flash boot now. So just do this:
Turn on your phone again (and disable usb debugging) and connect to computer, copy the .zip kernel/cutom rom to a location you remember ON the phone.
Flash it with the Recovery: Power off your device and then hold the VOL DOWN + Power to boot into the Bootloader Navigate with VOL and Power to Recovery Now flash the .zip:
- install zip from sdcard
- choose zip from sdcard
- select the downloaded SuperSU/SuperUser zip file and flash it
- Reboot now
Click to expand...
Click to collapse
Thanks for this awesome tutorial man. It definitely should help give noobs a much better understanding!
Sent from my HTC One using xda premium

thanks! this worked great. perfect for all the noobs

Thanks!! I was on the fence about rooting (since the one is so great out of the box) but had an immediate need for tethering. You got me up and running in ~20 Minutes!!

Glad to hear! I think you may have rooted your phone faster than me, lol.

Thank you for this. I am on the fence about which new device i will be purchasing and good to know someone went to the trouble with rooting instructions

rolling56 said:
Thank you for this. I am on the fence about which new device i will be purchasing and good to know someone went to the trouble with rooting instructions
Click to expand...
Click to collapse
Thanks for your kind words! I tried hard to make these instructions as easy as possible, it looks like others found it easy but if you have any questions let me know.

im having trouble unlocking. after i get the unlock code and put it in my folder, i do the cmd 'fastboot unlocktoken Unlock_code.din'. but i get an error "cannot load Unlock_code.bin". am i missing something?

OK
I'll test it out on mines here and let you know

msterner123 said:
im having trouble unlocking. after i get the unlock code and put it in my folder, i do the cmd 'fastboot unlocktoken Unlock_code.din'. but i get an error "cannot load Unlock_code.bin". am i missing something?
Click to expand...
Click to collapse
Did you change directory to that folder?
Can you take a screenshot?

ixrs said:
Did you change directory to that folder?
Can you take a screenshot?
Click to expand...
Click to collapse
Worked like a champ! Thanks! I can't believe I missed that.

Does anyone know where I can find the stock ROM for T-Mobile to flash back to stock?

kgor93 said:
Does anyone know where I can find the stock ROM for T-Mobile to flash back to stock?
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2276446
Seems to be where the stock stuff is at.

ixrs said:
http://forum.xda-developers.com/showthread.php?t=2276446
Click to expand...
Click to collapse
Thank you! I've been looking all over for that. Guess it was finally posted today.

kgor93 said:
Thank you! I've been looking all over for that. Guess it was finally posted today.
Click to expand...
Click to collapse
The only problem is that it has not been zipped, so we cannot use it to flash back to stock yet. Once it does, I'm going to be all over it! I wish I had been a bit more patient and just stuck out stock a few days more. I would've been able to realize how much disabling of installed apps just through the HTC settings menu. Not everything can be "disabled", but quite a bit can...
One of the few times where I think stock software is pretty good! Props to HTC!

I've heard this kinda thing voids the warranty, is that the case for the t-mobile 0ne?

Great tutorial but as usual I have been having saveer problems getting the HTC device to install properly so it can be detected in fastboot and recovery. Have been trying on both my laptop and desktop all day...

whitephenix said:
Great tutorial but as usual I have been having saveer problems getting the HTC device to install properly so it can be detected in fastboot and recovery. Have been trying on both my laptop and desktop all day...
Click to expand...
Click to collapse
Where are you stuck? I heard there was a problem with Win 8 x64 on usb 3.0.

Their was a problem for me with Windows 7 pro on my desktop but i finaly got it to work on my laptop.. I am led to think due to previous issues ultimate works better than pro or perhaps my hardware configuration on my homebrew leads windows to have certain comparability issues... The issue is spacifically with hardware detection and driver install errors. But like I said I got it to work on my laptop.
Sent from my HTC One using xda app-developers app

How easy is it to revert back to stock if you decide you don't want to use a custom rom anymore? Are factory images available to flash? Is it as easy as Samsung phones?

Ulefone power 2

hi folks,
tomorow should be getting my hands on the Ulephone power 2.
its the 5.5 screen 4gb ram 64gb rom.
all looks good until i have seen that the normal duel sim is one is hybrid for sdcard which is the norm right,
ant
but............
usually its sim 1 is for 4g cards and the hybrid is for 2g/3g/sdcard. yeah?
well the power 2 looks like its sim slot 1 is a 2g/3g slot and the hybrid is 4g or sdcard??????????
so will have to choose 4g or sdcard??? that cant be right?

I don't try this device with sim.
I know you can use the older power (1) have a sim 4g and SD card
So i believe the power 2 have the same method.
My first steps: How to root this device? i don't find a twrp.
I try to root with kingroot kingoroot, no results
Please?

The power 2 is the same as the power wrt the sim/memory card tray; both sim slots support 4g, but only one at a time. So if you put two 4g sims in, only one of them will have 4g (you choose which one), with a sim and a memory card the 4g should default to the inserted sim, but you might have to check this in settings.
Received my power 2 a couple of weeks ago after having it on pre-order for a month and I love it (sold the original power towards the cost).
I haven't tried rooting it yet, but was thinking of trying to flash twrp for the original power and seeing if that works. The great thing about these phones is that they're very hard to brick as you can always flash them as long as they still switch on.
Slàinte
mmidders

Hello my friends. I just bought the ulefone power 2 and i try to root it. Can anyone help me pls ???

mmidders said:
The power 2 is the same as the power wrt the sim/memory card tray; both sim slots support 4g, but only one at a time. So if you put two 4g sims in, only one of them will have 4g (you choose which one), with a sim and a memory card the 4g should default to the inserted sim, but you might have to check this in settings.
Received my power 2 a couple of weeks ago after having it on pre-order for a month and I love it (sold the original power towards the cost).
I haven't tried rooting it yet, but was thinking of trying to flash twrp for the original power and seeing if that works. The great thing about these phones is that they're very hard to brick as you can always flash them as long as they still switch on.
Slàinte
mmidders
Click to expand...
Click to collapse
I'm sure it's not working the twrp from the power (1).
If you have troubles with bootloops you can flash again the facatory rom and SP flash tools.
Press the power volume + and - and SP flash tools gonna flash.
The only way is to made a twrp from the k6000 http://fvknl.pro/k6000-plus-root-guide/
I don't know how, that device is almost the same...

There has been 2 ulefone Updates since launch
Android 8.0 is scheduled for end of the year.

Updates are fine, who can create a TWRP? So we can finally root the device

geheimke said:
Updates are fine, who can create a TWRP? So we can finally root the device
Click to expand...
Click to collapse
up

TWRP please!

Not so easy to do it. It will take very long time to port or build twrp

It sucks that power 2 still doesn't have root or twrp. I refuse to touch unrooted phones. I just received it as gift. I will keep it in a drawer and check next month or so.

I find that it lacks optimisation, kinda laggy in 3D/games ..
On Antutu, scores is 44000. I tested a galaxy S5 of a friend, it was 72000. For a phone that is several years older than Power 2.
I understand that it comes not with high end cpu/gpu but still..

I will copy my post from needrom website.
I have successfully rooted my two Power 2 phones. I had to port the TWRP recovery from Oukitel k6000 plus using Carliv Image Kitchen and following some online tutorials.
The only issue is, TWRP is semi functional, that is, touch doesn't work. I had to connect a mouse to my phone via OTG usb port and using some dongle to make USB smaller to fit the port. Also it comes with Russian language as default, but can be changed to English or any other as the original TWRP from Oukitel k6000+ (3rd button from second column, then click on Globe tab at the top right then choose English and the only button at the bottom to accept the change).
I am trying to fix this with no luck so far. But at least I am rooted and I was able to flash "SR1-SuperSU-v2.82-SR1-20170608224931.zip" which is the latest as of writing this. SuperSu functions properly and I am able to use AdAway.
If anyone is interested in the recovery image, I will post it. I flashed it using fastboot though after unlocking the bootloader using "fastboot oem unlock"
Click to expand...
Click to collapse

Rebel_X said:
I will copy my post from needrom website.
Click to expand...
Click to collapse
I would very much like to give this a go with my ulefone power 2!

Here you go, TWRP for Ulefone Power 2
What you need to do before you start flashing:
0) You need to have ADB installed on your computer, if you have Windows, the easiest way is by using 15 Seconds ADB Installer v1.4.3.
1) Your bootloader must be unlocked, otherwise flashing recovery will fail using fastboot command. PLEASE NOTE: When unlocking the bootloader, your phone will do a factory reset automatically, so backup all your important files beforehand.
To unlock the bootloader:
a) Go to Settings -> About Phone -> Build number (tap on it 7 times to unlock Developer Options) -> Tap on back to Settings menu then Developer Options.
b) Now move the slider for "OEM Unlocking" to enable it, say yes to the warning message.
c) Enable "USB Debugging"
d) Connect your phone to your computer via USB cable, say Yes for the dialog on your phone to trust your computer for debugging using USB.
e) Run command prompt and type
Code:
adb reboot bootloader
Then press enter
f) Once in bootloader, type
Code:
fastboot oem unlock
Then press Volume UP on your phone to allow OEM Unlock. It shouldn't take long, just few seconds and a message will appear on command prompt saying success or OK.
g) Type
Code:
fastboot reboot
To reboot your phone, it might reboot twice, it will do a factory reset and you will have to "Enable Developer Options and USB Debugging" again. As a side note, you will also notice that OEM Unlocking is grayed out. It will remain like that unless you do "fastboot oem lock" or erase the entire phone (might erase imei, but can be restored using SN Writer Tool) and/or flash bootloader using SP_FLASH_TOOL, but I digress.
2) Before you flash TWRP recovery, you must have SuperSu zip file on your phone beforehand, otherwise, your phone will not boot to Android. It has to do with something about the original TWRP for Oukitel k6000+, since the author of that TWRP port said so in the instructions about how to flash the recovery.
So download SR1-SuperSU-v2.82-SR1-20170608224931.zip from this link or the original SuperSu thread on XDA, and copy the file into your phone, say inside the Download folder in the internal memory of your phone.
3) Open command prompt again if it is not already open, type
Code:
adb reboot bootloader
4) Once in bootloader, type
Code:
fastboot flash recovery C:\TWRP-recovery-20170618-1340.img
Note: You replace the path for the TWRP recovery to where you have the file, to make it easier, just put it in the root of C drive.
Also, if you don't already know, while in command prompt, you can type C:\TWRP then press TAB to auto-complete the file name for you, so you don't have to type lengthy file names. Keep pressing TAB to cycle between similar occurrences, that is, if you have more than one file that their names start with TWRP
5) Press power button until phone shuts down. Then press Volume UP + Power and keep holding until you see super tiny text with 3 options to cycle between. Release your fingers from Volume Up + Power, then cycle between the options using Volume Up only, choose "RECOVERY" which is the first in the menu, then press Volume DOWN to select.
6) Wait a few seconds, you will be inside TWRP, connect your phone with a mouse since touch doesn't work here. Once you do, you will see a mouse pointer appear. I used a wireless mouse with bluetooth dongle, with an adapter to change USB port size.
7) Slide the slider to the right, to enable modifications to System partition. Don't press anything else, unless you know Russian, I don't .
8) To change the language to English or your own language, click on the third button of the second column. Then click on the Globe tab on the top right corner, change language, then press the only button at the bottom to accept. Language of the UI is changed.
9) Click "Install", browse for the SuperSu zip file you have downloaded to your phone, for example inside the Download folder. And then select it.
10) Slide to the right to flash SuperSu.
11) From the TWRP menus, you can reboot your phone.
12) Enjoy your rooted Power 2 phone. :good:
---------- Post added at 04:47 AM ---------- Previous post was at 04:47 AM ----------
alpsayin said:
I would very much like to give this a go with my ulefone power 2!
Click to expand...
Click to collapse
Check the post above :good:

hello , i got a ulefone power 2 but unfortunately its not powering on. As i am from india and returning or replacing is costly and timetaking process, i need you guys to help me. I tried to flash it with software available on the website but stuck. I need some checksum.ini file which is not there in the firmware file provided. So anyone please help me. the phone doesnt even show the ulefone logo. i can just see the charging percentage when the charger is connected, then keeping it connected i tried to turn on but didnt work. keeping the charger connected ,after some time the display goes off and no mater how long you press the power button , the display doesnt show up. I can only see the notification bulb.

Soft bricked :laugh: trying to recover the phone, official ulefone guide is useless. Getting some error about a missing checksum.ini file. Will keep this thread updated
All went well until step 9, where I realised factory reset deleted the supersu zip. So I tried to reboot into system to download it again. It never booted. Doesnt even go into adb mode.
Fastboot mode and TWRP intact (TWRP needs a mouse). I was able to flash original recovery via fastboot, getting "cannot load system.img" error when I try to flash system (it appears I might need to update my adb/fastboot version).
UPDATE: was able to flash the stock rom. And tried to follow the guide again, and faced the same symptoms. If i have working TWRP, then the system doesnt boot. And vice-versa. Will keep updated, i'm a persistent mf
Rebel_X said:
Here you go, TWRP for Ulefone Power 2
What you need to do before you start flashing:
0) You need to have ADB installed on your computer, if you have Windows, the easiest way is by using 15 Seconds ADB Installer v1.4.3.
1) Your bootloader must be unlocked, otherwise flashing recovery will fail using fastboot command. PLEASE NOTE: When unlocking the bootloader, your phone will do a factory reset automatically, so backup all your important files beforehand.
To unlock the bootloader:
a) Go to Settings -> About Phone -> Build number (tap on it 7 times to unlock Developer Options) -> Tap on back to Settings menu then Developer Options.
b) Now move the slider for "OEM Unlocking" to enable it, say yes to the warning message.
c) Enable "USB Debugging"
d) Connect your phone to your computer via USB cable, say Yes for the dialog on your phone to trust your computer for debugging using USB.
e) Run command prompt and type
Code:
adb reboot bootloader
Then press enter
f) Once in bootloader, type
Code:
fastboot oem unlock
Then press Volume UP on your phone to allow OEM Unlock. It shouldn't take long, just few seconds and a message will appear on command prompt saying success or OK.
g) Type
Code:
fastboot reboot
To reboot your phone, it might reboot twice, it will do a factory reset and you will have to "Enable Developer Options and USB Debugging" again. As a side note, you will also notice that OEM Unlocking is grayed out. It will remain like that unless you do "fastboot oem lock" or erase the entire phone (might erase imei, but can be restored using SN Writer Tool) and/or flash bootloader using SP_FLASH_TOOL, but I digress.
2) Before you flash TWRP recovery, you must have SuperSu zip file on your phone beforehand, otherwise, your phone will not boot to Android. It has to do with something about the original TWRP for Oukitel k6000+, since the author of that TWRP port said so in the instructions about how to flash the recovery.
So download SR1-SuperSU-v2.82-SR1-20170608224931.zip from this link or the original SuperSu thread on XDA, and copy the file into your phone, say inside the Download folder in the internal memory of your phone.
3) Open command prompt again if it is not already open, type
Code:
adb reboot bootloader
4) Once in bootloader, type
Code:
fastboot flash recovery C:\TWRP-recovery-20170618-1340.img
Note: You replace the path for the TWRP recovery to where you have the file, to make it easier, just put it in the root of C drive.
Also, if you don't already know, while in command prompt, you can type C:\TWRP then press TAB to auto-complete the file name for you, so you don't have to type lengthy file names. Keep pressing TAB to cycle between similar occurrences, that is, if you have more than one file that their names start with TWRP
5) Press power button until phone shuts down. Then press Volume UP + Power and keep holding until you see super tiny text with 3 options to cycle between. Release your fingers from Volume Up + Power, then cycle between the options using Volume Up only, choose "RECOVERY" which is the first in the menu, then press Volume DOWN to select.
6) Wait a few seconds, you will be inside TWRP, connect your phone with a mouse since touch doesn't work here. Once you do, you will see a mouse pointer appear. I used a wireless mouse with bluetooth dongle, with an adapter to change USB port size.
7) Slide the slider to the right, to enable modifications to System partition. Don't press anything else, unless you know Russian, I don't .
8) To change the language to English or your own language, click on the third button of the second column. Then click on the Globe tab on the top right corner, change language, then press the only button at the bottom to accept. Language of the UI is changed.
9) Click "Install", browse for the SuperSu zip file you have downloaded to your phone, for example inside the Download folder. And then select it.
10) Slide to the right to flash SuperSu.
11) From the TWRP menus, you can reboot your phone.
12) Enjoy your rooted Power 2 phone. :good:
---------- Post added at 04:47 AM ---------- Previous post was at 04:47 AM ----------
Check the post above :good:
Click to expand...
Click to collapse

mbs.yaswanth said:
hello , i got a ulefone power 2 but unfortunately its not powering on. As i am from india and returning or replacing is costly and timetaking process, i need you guys to help me. I tried to flash it with software available on the website but stuck. I need some checksum.ini file which is not there in the firmware file provided. So anyone please help me. the phone doesnt even show the ulefone logo. i can just see the charging percentage when the charger is connected, then keeping it connected i tried to turn on but didnt work. keeping the charger connected ,after some time the display goes off and no mater how long you press the power button , the display doesnt show up. I can only see the notification bulb.
Click to expand...
Click to collapse
Yeah, I had the same issue with the software that comes from Ulefone, it was asking for Checksum Generator that I have to download separately, it was like 150kb stand alone executable, you put it in the same folder of your stock ROM and wait forever for it to build the Checksum, which unfortunately didn't work since it complains about multiple RECOVRY images. So scratch that.
What you need to do, is as I did, download SP FLASH TOOL, it works great, no shinanigans or bullsh!t. It flashed the stock ROM in less than 2 minutes (around 1:30 seconds, to be exact) and revived my phone. There are plenty of youtube tutorials on how to use it. It is easy, just load the scatter file, for the other file, you can use the same all in one mtk file that comes with SP FLash Tool (I did this) or use the one from your STOCK ROM.
I hope that helps :good:
---------- Post added at 02:33 PM ---------- Previous post was at 02:27 PM ----------
alpsayin said:
Soft bricked :laugh: trying to recover the phone, official ulefone guide is useless. Getting some error about a missing checksum.ini file. Will keep this thread updated
All went well until step 9, where I realised factory reset deleted the supersu zip. So I tried to reboot into system to download it again. It never booted. Doesnt even go into adb mode.
Fastboot mode and TWRP intact (TWRP needs a mouse). I was able to flash original recovery via fastboot, getting "cannot load system.img" error when I try to flash system (it appears I might need to update my adb/fastboot version).
UPDATE: was able to flash the stock rom. And tried to follow the guide again, and faced the same symptoms. If i have working TWRP, then the system doesnt boot. And vice-versa. Will keep updated, i'm a persistent mf
Click to expand...
Click to collapse
All I can think of, you did something wrong. Initially, while I was trying to port TWRP, I had the same issue, I was trying to save some steps by flashing the recovery after I unlocked the bootloader without rebooting, the result was TWRP was not able to see any partitions.
Flash Stock-ROM and redo the steps. If you flash the preloader you might have to OEM Unlock your phone again.
I mentioned that if you "do not flash SuperSu, the system will NOT boot to Android". Also mentioned that after you unlock the bootloader, you have to RE-ENABLE USB Debugging, and while you are at it, check to see if your bootloader is unlocked inside Developer Options.
Edit: BTW, try not to unlock the bootloader if it is already unlocked. If it is unlocked, then skip the steps for unlocking the bootloader. It might cause an issue.
These are the steps I used to flash TWRP and I was able to flash SuperSu, all rooted apps are working fine, AdAway, Lucky Patcher...etc!

This:
Rebel_X said:
Here you go, TWRP for Ulefone Power 2
2) Before you flash TWRP recovery, you must have SuperSu zip file on your phone beforehand, otherwise, your phone will not boot to Android. It has to do with something about the original TWRP for Oukitel k6000+, since the author of that TWRP port said so in the instructions about how to flash the recovery.
Click to expand...
Click to collapse
And this combined:
Rebel_X said:
Here you go, TWRP for Ulefone Power 2
9) Click "Install", browse for the SuperSu zip file you have downloaded to your phone, for example inside the Download folder. And then select it.
Click to expand...
Click to collapse
Apparently if you dont flash the supersu first time you go into TWRP then it gets messy. Got the root working now. Thank you for the help and of course for the TWRP build!
Also if anyone's wondering it's possible to restore the system via fastboot. Extract the rom zip (can be downloaded from http:/ulefone.com/download/power2.html ) and flash boot, recovery and system;
Code:
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash system system.img

link for sp flash tool u used.
Rebel_X said:
Yeah, I had the same issue with the software that comes from Ulefone, it was asking for Checksum Generator that I have to download separately, it was like 150kb stand alone executable, you put it in the same folder of your stock ROM and wait forever for it to build the Checksum, which unfortunately didn't work since it complains about multiple RECOVRY images. So scratch that.
What you need to do, is as I did, download SP FLASH TOOL, it works great, no shinanigans or bullsh!t. It flashed the stock ROM in less than 2 minutes (around 1:30 seconds, to be exact) and revived my phone. There are plenty of youtube tutorials on how to use it. It is easy, just load the scatter file, for the other file, you can use the same all in one mtk file that comes with SP FLash Tool (I did this) or use the one from your STOCK ROM.
I hope that helps :good:
---------- Post added at 02:33 PM ---------- Previous post was at 02:27 PM ----------
All I can think of, you did something wrong. Initially, while I was trying to port TWRP, I had the same issue, I was trying to save some steps by flashing the recovery after I unlocked the bootloader without rebooting, the result was TWRP was not able to see any partitions.
Flash Stock-ROM and redo the steps. If you flash the preloader you might have to OEM Unlock your phone again.
I mentioned that if you "do not flash SuperSu, the system will NOT boot to Android". Also mentioned that after you unlock the bootloader, you have to RE-ENABLE USB Debugging, and while you are at it, check to see if your bootloader is unlocked inside Developer Options.
Edit: BTW, try not to unlock the bootloader if it is already unlocked. If it is unlocked, then skip the steps for unlocking the bootloader. It might cause an issue.
These are the steps I used to flash TWRP and I was able to flash SuperSu, all rooted apps are working fine, AdAway, Lucky Patcher...etc!
Click to expand...
Click to collapse
ok what should i select there? formal all+download or download only or firmware upgarade???

[GUIDE] Step by Step install for Android 10 from Stock Oreo

There are a number of generic installation guides for custom roms eg https://www.xda-developers.com/how-to-install-custom-rom-android/
However this one is specifically for the LG G6 and tested using the US997 model. It worked for me, but I welcome comments on how to improve it.
Create a folder on the PC for all the downloads and files
Download phone driver from LG website
https://www.lg.com/us/support/help-library/lg-mobile-drivers-and-software-CT10000027-20150179827560
Download ADB/Fastboot https://developer.android.com/studio/releases/platform-tools (You need to unzip once downloaded)
(I had an error "adb server version (31) doesn't match this client (41) killing". I searched my PC and found an older version which I had used for another phone and deleted the folders and reinstalled from the download)
Ensure the phone is backing up. (Google backup is working, you have all your photos music etc downloaded) the next steps will wipe the phone
Remove the PIN/Password/Fingerprints from the phone so it will boot without any security.
Unlock the bootloader
https://developer.lge.com/resource/mobile/RetrieveBootloader.dev
The phone will then reboot and do a complete wipe so you need to wait a while for Android to setup.
Telegraph has the latest news on LG G6 ROMs and Recovery. From here I got the links for SHRP recovery which seems more up to date for LG G6 than TWRP. (https://web.telegram.org/#/[email protected])
https://sourceforge.net/projects/pa-g6/files/Releases/SHRP/20.07.2020/US997/
I named the downloaded file "recovery" (You need the .img file not the ZIP)
There are lots of active ROMS for LG G6 I have Lineage installed on another phone which works really well, but Havoc seems the most popular on the G6.
Download the ROM and Gapps https://opengapps.org/ (I used Nano, remember G6 is 64bit)
You will also need to update the bootloader. This was the latest I found for the US997
https://androidfilehost.com/?fid=1899786940962575226
(I missed the bootloader the first time and Gapps will not flash, I was helped by the LG G6 community on Telegram https://web.telegram.org/#/[email protected])
Now you have downloaded all you need
Then connect the phone to the PC and ensured you have ADB debug on in developer options and boot the phone into fastboot
On the PC open a command prompt in the folder you have all the files:
adb reboot bootloader
To load the recovery to the phone :
Fastboot flash recovery recovery.img
YOU MUST NOW BOOT DIRECTLY TO RECOVERY. Do not reboot to Android as this will automatically reset recovery to the stock version.
Unplug the USB cable and reboot to recovery (hold volume down + power button).. continue holding until phone reboots...
As soon as you see the LG logo on the screen.. let go of the power button then quickly press it again (never letting go of volume down).
Keep holding until you see the Factory Reset screen. Click thru the factory reset screens using the volume buttons to move up/down and power button to select. Choose "Yes" twice (saying you want to reset the phone it should boot into your new recovery. Despite what the screen says it won't actually factory reset/wipe your data... as long as you've installed a custom recovery and have not booted into Android since then.
Most likely you will be asked the password to decrypt the data folder. I tried my phone PIN and other default passwords suggested on the internet. I eventually found that this is a known issue and you need for cancel out of this screen and go and "FORMAT DATA"
Reboot directly to recovery (select reboot recovery in Skyhawk), this time you should not be asked for the decryption password.
I recommend you backup your current setup before making changes. If you hit issues you can use the recovery to restore. My SD card slot is broken (Poor LG design) so I plugged a USB thumb drive into the USB C slot and did a full backup. (No data since I just formatted it).
Wipe the partitions before you flash
Full wipe ("The only option you ever need")
Select Advanced and wipe system partition.
FLASH (You need to put the ZIP files either on the USB drive as I did, or copy to your SD card, or you can use ADB sideloader from the PC to push the files to the phone). The USB drive seems the easiest since you can plug it into your PC to load the files then plug it into the phone to read them.
Flash in the following order
Bootloader
ROM
Gapps
After Installing wipe cache and Davik
Reboot
It will do lots of processing while setting up. Ensure it stays cool (remove case and leave it plugged in with the screen off)
Donate to the developer of your new ROM at the end when it works.

I have been running my LG G6 on Android 10 for a few weeks and thought I would share my observations, I am using Havoc 3.7 installed with Skyhawk, I did not root the phone.
Likes : Very smooth experience, phone feel like it is running much faster. Very stable, I had one surprise reboot in the time I have used it. No issues (so far) with installing or using any apps including banking. Much lower use of storage, I have 6GB free.
Same : Battery life is about the same as before.
Gaps : Cannot encrypt, VOLTE doesn't work (which may become a big issue for T-Mobile and AT&T soon), when being used the phone gets much warmer than it did before and the wifi setting randomly turns off.
Next Steps: I am going to try Lineage which has released some fixes for the WIFI issue and report back.

I'm trying to follow the instructions as per this guide for the tmo version of G6 (H87220g) and I'm running into a roadblock on the recovery flash:
[[email protected] tmp]$ mkdir skyhawk
[[email protected] tmp]$ cd skyhawk && 7z x ../SHRP_v2.3.2_us997-233920072020.zip
[[email protected] skyhawk]$ fastboot flash recovery recovery.img
Sending 'recovery' (36936 KB) OKAY [ 1.252s]
Writing 'recovery' FAILED (remote: 'unknown command')
fastboot: error: Command failed
Click to expand...
Click to collapse
I downloaded the Skyhawk zip from the PA download link, unzipped it and used the recovery.img file found inside the zip as part of the fastboot command. Is this incorrect ?

Yes, you need the recovery.img file to flash via fastboot. Have you successfully unlocked the boot loader? You cannot replace recovery without unlocking.
You also need to ensure you have the appropriate files for your phone I have a US997 but as you have H872 you would need skyhawk for the H872 in the notes above you are still using US997.

bootloader is unlocked as per:
https://forum.xda-developers.com/tmobile-g6/how-to/unlock-bootloader-tmo-t3578099
fastboot flash is failing and I'm not the only one it seems like based on comments here and reddit...
I gonna try out @runningnak3d guide and see if that works...

This guide is for the US997. The H872 has a much more complicated process to install recovery : https://forum.xda-developers.com/tmobile-g6/how-to/root-h872-to-including-11g-t3775518

H915 - Installing Lineage 18.1 (Unlock Bootloader, TWRP, Root Optional)

Hi All,
With the recent launch of LineageOS 18.1 I decided to take the plunge and get it installed on my fully stock Videotron/Freedom H915. Since I had to smash together info from a half dozen other threads, I figured I'd gather it all together here for folks with a Canadian phone trying to make this work.
Since I knew absolutely nothing coming into this, I'm going to go a little more detailed on this write-up. If you've been flashing ROMs since the old days of Cyanogenmod you can probably skim half of this.
Disclaimer : I'm not responsible for any bricked phones or other negative outcomes. This is what worked for me, but I'm far from being an expert. If you continue past this point you agree to take your time, do your reading, be responsible for your own device/actions and not hold me or the forum accountable for anything that might go wrong. You've been warned.
IMPORTANT NOTE #1
If you've picked up an H915 on ebay and you are intending to use it on a network other than the one it's SIM locked on, make sure you do the whole SIM unlock process on the stock ROM either before you get started at all, or once you've reverted to the vulnerable stock ROM after Step 1 below.
I actually use Telus as my provider and I wasted a bunch of time trying to figure out why I couldn't get signal because only the stock ROM will prompt you for a SIM Unlock code. Lineage will just sit there dumbly and not allow you to enable data.
Once you've unlocked the SIM it will stay unlocked from that point forward, just make sure to unlock it and verify your SIM is working with LTE on the stock ROM before you get started.
IMPORTANT NOTE #2
Use LGUP's "DUMP" feature to take a backup of ALL partitions on your phone before you start. If you're reading this thinking "I just bought this phone off ebay, there's nothing on it I care about", take the backup anyway. You never know when you might need a copy of the modem partitions or other things from your phone's original build. It came in super handy for me in troubleshooting the process. So go do a backup!
Current Issues:
If signal is too weak to connect to a tower (or non-existent), the OS tends to crash with a modem error. Still trying to figure this one out.
I think I can get this working without first jumping to US996 but haven't had a chance to verify that. If I do I'll update the thread.
Download Prerequisites
Links working as of 2021-06-29
LGUP with patch
Link
Working adb/fastboot environment
Instructions
Download
Fastboot Drivers
Link
Universal ADB Driver
Link
Videotron/Freedom H915 Android 7 (Nougat) version E - H91510e_00_VTR_CA_OP_1205.kdz
Link
USA General US996 Android 7 (Nougat) version F - US99610f_00_1205.kdz
Link
APK for Terminal Emulator
Link or Alternate Link
LG V20 Root Package Original (v4?)
Link
Old TWRP for Root Package
Link
Videotron/Freedom H915 Modem Partition Image
Link
Lineage Install Zip for H910 (grab the latest, I'm using lineage-18.1-20210506-nightly-h910-signed.zip which is already out of date)
Link
MindTheGapps
Link
(Optional, for rooting) Magisk
Link
Different Boot Modes
For those not familiar with these phones, there are three different "modes" the phone can boot into. Here's a quick reference on how to boot into each one.
Download Mode
This mode is used for pushing KDZ files or individual partition backups using LGUP
Turn Off Phone
Hold the Up-Volume Button
Insert USB-C Cable with other end already plugged into PC
Bootloader (aka Fastboot) Mode
The H915 doesn't come with this mode by default. If you try it, you'll just get battery charging. We'll be temporarily converting the phone to a US996 in order to use the DirtySanta exploit to replace the bootloader partition with a leaked Engineering aboot.
This mode is used with the fastboot tool to load the TWRP utility into the Recovery partition.
Turn Off Phone
Hold the Down-Volume Button
Insert USB-C Cable with other end already plugged into PC
Recovery Mode
The recovery mode on a stock phone is used to perform a factory reset. We will be using the Factory Reset a couple times with the stock ROMs, then replacing the contents of the recovery partition with the TWRP tool that allows us to format partitions, load partition images, and sideload apps and LineageOS itself.
Turn Off Phone
Hold the Down-Volume Button
Press and hold Power-On (rear fingerprint sensor/button). When LG Logo appears, release power button for 1 second then press and hold again
When "Factory Data Reset" appears, release all buttons
Press Volume Down to highlight "Yes" then press power button to select the option
Repeat for the confirmation
Note about flashing KDZ files using LGUP
You can flash KDZ files onto the phone using LGUP from two places - either with the phone in "Download Mode", or with the phone booted into the OS with the USB Options set to "File Transfer" and USB Debugging turned on.
The difference between these two is when it performs the OS compatibility check.
In Download Mode it's the code of the Download Mode partition that does the check. In the OS, it's the OS that does the check before booting to Download Mode and bypassing Download Mode's check.
Why is this important? Because when converting from one phone to another (Say, an H915 to a US996 like we do below), you initially can't flash the KDZ using LGUP's "Upgrade" function. You can only use "Partition DL" to replace the contents of partitions with the contents of the KDZ. This kind of works, but ends up with a phone that will sometimes identify as a H915 (in Download Mode) but sometimes identify as a US996 (in the OS). To clean it up, once you've done the Partition DL method, you can do it again from the OS and use the Upgrade method to get a really clean install.
It works going back the other way as well when you want to return to stock.
If this doesn't make sense, don't worry. You don't need to fully understand it to follow the instructions below, I just found it to be interesting info that didn't seem to appear in other threads.
Process Overview
Revert the phone to an old/vulnerable stock Nougat ROM for Videotron/Freedom Mobile
Enable Dev Options
Dump contents of US996 KDZ partitions over top of existing partitions
Cleanup by re-flashing US996 KDZ partitions over top of existing partitions
Transfer files to the SDCard and install Terminal Emulator
Unlock the Bootloader using the DirtySanta exploit
Boot to old TWRP and install new TWRP
Boot to new TWRP, install LineageOS, Google Apps, and flash modem partition image
Reboot to LineageOS
Actual Process
1 - Revert the phone to an old/vulnerable stock Nougat ROM for Videotron/Freedom Mobile
We need to be on Nougat for this to work, so if you're on Oreo you have to downgrade to Nougat before we begin. I chose a Nougat ROM for the H915 that's vulnerable to the DirtySanta exploit because I know it works and because I'm hoping in the future to be able to skip converting the phone to a US996 if possible.
Boot phone into Download Mode
Launch LGUP with Patch
Select "Upgrade" radio button
Select bin file : H91510e_00_VTR_CA_OP_1205.kdz
Click Start
When finished phone will reboot
1.5 - Do this if Step 1 Failed... Otherwise continue to Step 2
Depending on what's loaded on your phone when you start, it might complain about doing Step 1. This should allow us to bypass the issue and allow Step 1 to work. You can use this step if you've already converted the phone to another model as long as it's not bricked.
Boot phone into download mode
Launch LGIP with Patch
Select "PartitionDL" radio button
Select bin file : H91510e_00_VTR_CA_OP_1205.kdz
Click Start
Click the "Select All" partitions checkbox and click OK. When done it will reboot.
If it hangs or loops on reboot, boot into "Recovery Mode" (which at this point will Factory Reset the OS)
The phone boots into the OS
Quickly go through setup wizard. Skip as many things as possible.
Go Settings - General - About Phone - Software Info - Make sure it identifies as H91510e
Change the USB Option mode to "File Transfer"
Then repeat Step 1, but from inside the OS instead of in Download Mode
2 - Enable Dev Options and File Transfer Mode
We need these enabled after every time we flash the OS so that our LGUP and adb commands will work. You'll get used to doing these steps a bunch.
Quickly go through setup wizard. Skip as many things as possible.
Unplug USB-C cable
Swipe down from the top and change from USB Charging mode to File Transfer mode
Settings - General - About Phone - Software Info
Tap on Build Number many times until it unlocks Developer Mode
Go back 2 menus and enter the new "Developer Options" menus
Make sure "Enable OEM Unlock" is enabled
Enable "USB Debugging" (will be greyed out if USB-C cable is still attached)
Go back to main screen
Plug USB-C cable back in.
A pop-up will appear asking to Allow USB Debugging. Check the "Always Allow" box and tap OK
3 - Dump contents of US996 KDZ partitions over top of existing partition
The Videotron/Freedom KDZ has no Bootloader/Fastboot mode. If you try to enter bootloader mode you'll just end up charging the battery. So we have to cross-flash the US996 KDZ to get a phone with a bootloader which we can then replace with the engineering version using the DirtySanta exploit.
Boot phone into download mode
Launch LGUP with Patch
Select "PartitionDL" radio button
Select bin file : US99610f_00_1205.kdz
Click Start
Click the "Select All" partitions checkbox and click OK
When the phone boots back into the OS, repeat all of Step 2.
Note: If it asks for a password on startup, follow the "Boot to Recovery" steps and since
we don't have anything loaded in the recovery partition it will wipe/erase the phone
and remove the password.
4 - Cleanup by re-flashing US996 KDZ partitions over top of existing partitions
As mentioned in the "Note about flashing KDZ files using LGUP" section above, after you use the PartitionDL method you get a kind of dirty phone image that doesn't always identify as its new model. To clean up, we repeat the process in Upgrade Mode, taking advantage of the fact that at least the OS now identifies as US996 even if Download Mode doesn't. After this, Download Mode will also identify as US996.
Starting booted into the OS with a USB-C cable attached (File Transfer mode, USB Debugging on):
Launch LGUP with Patch
Select "Upgrade" radio button
Select bin file : US99610f_00_1205.kdz
Click Start
When the phone boots back into the OS, repeat all of Step 2.
5 - Transfer files to the SDCard and install Terminal Emulator
We will need some files on the SDCard in the phone in order to install them, either inside the OS (in the case of Terminal Emulator), or later on from TWRP. The Terminal Emulator will be used for the DirtySanta exploit so we need to get that installed now.
Make sure the USB Connection is set to Data Transfer mode and copy the following files to the SDCard:
APK for Terminal Emulator
twrp-3.5.1_9-0-us996.img
h915freedommobilemodem.img
Enable installing apps from unknown sources by:
Settings - General - Fingerprints and Security - Unknown sources (turn it On)
Install Terminal Emulator:
Tools - File Manager
Choose "Allow" when prompted
Click the up-arrow next to "Internal Storage"
Choose SD Card
Scroll down and tap on jackpal.androidterm-1.0.70-71-minAPI4.apk
Install
6 - Unlock the Bootloader using the DirtySanta exploit
The US996 KDZ has a bootloader but it's locked. In order to unlock it we need to use the DirtySanta exploit to give us permissions to replace the Bootloader/Fastboot with a leaked engineering version.
Starting booted into the OS with a USB-C cable attached (File Transfer mode, USB Debugging on):
Settings - General - About Phone - Software Info
Verify that Software Version lists as US99610f
Copy the twrp-3.0.2-1-us996.img file into the folder containing the LG V20 Root Package
Open a command prompt window and change to the folder containing the LG V20 Root Package and run "Step1.bat"
It will push multiple files to the phone and apply some patches/exploits.
This proces will take 5 minutes and put you out at an "elsa:/ $" prompt
At this "elsa:/ $" prompt in your command prompt window type the following:
run-as con
chmod 0777 /storage/emulated/0/*
On the phone, launch Terminal Emulator and run the following:
id
Verify that the string which comes back contains the string "context-u:r:untrusted_app".
If not, run Step1.bat again, else continue forward
Enter the follosing command into Terminal Emulator (be very careful to type it properly):
applypatch /system/bin/atd /storage/emulated/0/dirtysanta
If that command came back with an error, close and re-open Terminal Emulator and try again
The command should begin to patch another file. This will take 5 minutes and will return you to the "elsa:/ $" prompt in Terminal Emulator when it has finished
Open another command prompt to the same folder and run "Step2.bat"
This step will download backup copies of the boot and aboot partitions from the phone then boot the phone into bootloader/fastboot mode.
You'll know it worked if the first line at the top of the phone screen appears in red
In the command prompt window, run Step3.bat
It will flash boot1.img and the TWRP Recovery image multiple times then restart the phone
The phone will hang, no matter how long it's left. Wait 5 minutes (at least until the logo re-loads once) then do the following:
Unplug the USB-C cable
Remove the battery from the phone to turn it off
Replace the battery
Boot into Fastboot mode and run the following commands in your command prompt:
fastboot flash boot bootbackup.img
Remove the USB-C cable and battery to turn off the phone. Then replace the battery and enter Recovery Mode
The phone will show a big red exclamation mark saying "Your device is corrupt". This is normal. It will go away after a few seconds then boot into recovery. This error screen is the result of the engineering "aboot" image that was flashed to give us an unlocked bootloader and will always happen on boot.
7 - Boot to old TWRP and install new TWRP
The old version of TWRP recovery will load. Don't ask me why we can't just go straight to new TWRP above, it didn't work well when I tried it.
If it asks for a password to decrypt data, click Cancel
Swipe to allow modifications
Install - Select Storage - MicroSD Card - OK
Install Image - Scroll down and tap the "twrp-3.5.1_9-0-us996.img"
Select the Recovery partition and swipe to confirm flash
Back to main menu
Reboot - Recovery
8 - Boot to new TWRP, install LineageOS, Google Apps, and flash modem partition image
The new version of TWRP will load:
Check the "Never show this screen during boot again" box
Swipe to allow modifications
Wipe - Format Data - type "yes" to continue
This is likely to fail the first time. Repeat it to properly format the data partition.
Go back to Main Menu - Wipe - Advanced Wipe - Select "Dalvik / ART Cache", "System", and "Cache"
Swipe to wipe
Back to main menu
Advanced - ADB Sideload
Plug in USB-C cable
Swipe to start sideload
In command prompt window on PC type the following:
adb sideload lineage-18.1-20210506-nightly-h910-signed.zip
When complete tap "back" and "ADB Sideload" and swipe again to apply another file:
adb sideload MindTheGapps-11.0.0-arm64-20210412_124247.zip
If you want to root the phone (completely optional, not necessary for this process), now is the time to do it. Tap "back" and "ADB Sideload" and swipe again to apply another file:
adb sideload Magisk-v23.zip
Go back to main menu - Install - Install Image - tap the h915freedommobilemodem.img file
Select the Modem partition and swipe to confirm flash
Remove USB-C cable
9. Reboot to LineageOS
Go back to main menu - Reboot - System - Swipe to reboot
References where I got the info to make this tutorial
Official Lineage 18.1 for LG V20 Release Thread
LineageOS Wiki for H910
DirtySanta Bootloader Unlock and Root Guide (Original)
H910 Rooting Thread (Cross-flash H915 then DirtySanta to US996)
H915 Root, TWRP using DirtySanta [WorkingSignals]
Noob Friendly Root TWRP using DirtySanta
General info about Modem Hardware, Firmware, Radio Interface Layer

[Reserved]

thank you so much. i need it

Great job for writing a complete how-to guide!

Thank You, You saved my old V20 H915

hi have you been able to find a better modem?
btw i'm not able to decrypt under twrp, can you?

Just want to confirm, it's only guide wich works for me. But I have issues with modem:
1. When I tried to change mode of modem, "prefered network type", phone stayed in the loop of the kernel panic "modem crash"
2. It were difficult to revert changes back. Finally, safe mode (in order to get it, you need to press volume up and volume down in the same time, during LinageOS booting process) helped me - when I disabled airplan mode, I had 2-10 seconds until next kernel panic. And in ~10 attempts, I were able to finally switch modem's mode to GSM/WDCMA/LTE
3. I used this phone 3 days, and once the kernel panic (because of modem) happened again
Any ideas what to do with modem? Also, the picture "Your phone is corrupt" is not fan Any ideas how to change it?

I did my best to follow all the instructions but after step 7's reboot I just get blocks full of static. I can tell it's trying to do fresh install setup though from what's peeking through the blocks.

Riot54 said:
I did my best to follow all the instructions but after step 7's reboot I just get blocks full of static. I can tell it's trying to do fresh install setup though from what's peeking through the blocks.
Click to expand...
Click to collapse
This is normal. Flash a kernel that's patched for dirty santa OR, cover the proximity sensor on boot and keep it covered until boot is complete.

That worked, thanks.

After multiple attempts going back and forth with step 6, I finally did it! I might switch to Lighthouse or Arros but I wouldn't have gotten this far without your guide.

Question How to fix bootloop?

I tried to root my phone using this guide, followed it down to the word and yet my phone's stuck in a bootloop. It keeps restarting to the Poco start screen.
Ive got the stock recovery, and for some odd reason fastboot commands work only in the "FASTBOOTD" screen and not the the "FASTBOOT" screen which you get from "adb reboot bootloader" command.
I try to shut it down and it boots up back again in the same screen and is stuck there.
Im clueless and I really dont know what to do. Some help would be greatly appreciated.
edit: I tried to use the stock recovery and wipe data. No progress.
I tried to connect the phone with the MIAssistant but the app doesnt recognise the device.
I tried using the MiFlash tool to flash the stock rom, it goes on infinitely. Im currently trying to use the SP Flash tool and MediaTek Bypass tool but I havnt got any progress yet.
I promise I'm never buying MediaTek devices ever again.

Careful with the Flash and Bypass tools, they can cause problems.
What can you achieve with the hardware buttons on the phone? Can you get it into recovery?
Fastbootd working but fastboot not sounds like a USB drivers problem - there are some driver options here.

aricooperdavis said:
Careful with the Flash and Bypass tools, they can cause problems.
What can you achieve with the hardware buttons on the phone? Can you get it into recovery?
Fastbootd working but fastboot not sounds like a USB drivers problem - there are some driver options here.
Click to expand...
Click to collapse
It was a driver issue, thanks for the link.
What I did to get out of the bootloop:
1. Download the latest Miui rom for your version, make sure it's the recovery version and not the fastboot one.
2. Press ALL the buttons, Vol+ Vol- and Power button to shut it down for a few seconds (assuming you can't switch it off as it keeps powering back up again).
3. After it's switched off, quickly press the power and vol- button until you see the FASTBOOT screen.
4. Connect with PC, make sure you have the proper drivers and have connected with the right USB port.
5. Download OrangeFox custom recovery. It is a unofficial custom recovery, so its stability is questionable. But it does the job here.
6. Copy the OrangeFox zip and the Miui rom file to your phone's SD card or any external storage which your phone can access.
7. In your PC, extract the OrangeFox zip folder in your platform-tools folder. (The folder where you run your cmd fastboot/adb commands)
8. Open up cmd, and enter the command:
fastboot flash boot recovery.img
9. Your phone should boot up to the OrangeFox recovery. If not switch the phone off (Step 2) and press power + vol+ button for booting up to the recovery.
10. Locate your OrangeFox zip installer file in the recovery and flash it.
11. Reboot to the recovery again.
12. Locate the Miui rom and flash that. Before swiping to flash the rom, there is a check box which says something like "flash OrangeFox once the rom has been flashed". If you want to keep OrangeFox as your recovery then check it, or else leave it unchecked. Flashing roms remove custom recoveries.
13. Your phone must reboot to miui.
NOTE: You can use fastboot commands to flash the rom but I'm not very familiar with fastboot commands (I actually forgot most of them). Hence I use the recovery method.

warhead1721972 said:
It was a driver issue, thanks for the link. Should I delete this post? It isnt much big of an issue imo.
Click to expand...
Click to collapse
Great, glad you got it sorted! No, leave it up, you never know someone might stumble across it and find it useful

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welcome