Phone always booting into Fastboot mode. (Ignore this post) - LG G8X ThinQ Questions & Answers

Hello, I used instructions to unlock my bootloader and it worked, but after flashing an img file to boot_a and boot_b my Phone can only go into fastboot now, is there a way to fix this issue?
Phone Model: LM-G850UM

Related

MetroPCS Moto E5 Plus Root And Recovery Solution

So with the help of @CodyF86 with his lovely twrp recovery I have had trouble flashing to the metro variant of this device so I found a firmware where I can flash it without messing up my modem and my LTE Metro Connection so this is for those who cannot boot up.
So first you will need to use Cody's guide on booting up twrp to along with fstab and all the other stuff on his guide before doing this.
After you did his guide now it's time for mine if you can't boot up properly and mind you the LTE works and wifi but I can't seem to find out why it feels a bit slow but anyway.
Step 1. Download this update and put it(unzip file) into your adb/fastboot folder on your computer. https://drive.google.com/file/d/1kW-FAfXccQMBMX3DuGJ_p2r0moDiCYtR/view?usp=drivesdk
Step 2. Put your phone into fastboot mode
Step 3. Flash these in order
fastboot flash boot boot.img
fastboot flash system system.img_sparsechunk.0
fastboot flash system system.img_sparsechunk.1
fastboot flash system system.img_sparsechunk.2
fastboot flash system system.img_sparsechunk.3
fastboot flash oem oem.img
fastboot erase userdata
fastboot erase DDR
fastboot flash logo logo.bin
fastboot reboot
After that's done follow Cody's guide again and make sure you do it step by step and flash ONLY MAGISK 16.7
TheAmbition267 said:
So with the help of @CodyF86 with his lovely twrp recovery I have had trouble flashing to the metro variant of this device so I found a firmware where I can flash it without messing up my modem and my LTE Metro Connection so this is for those who cannot boot up.
So first you will need to use Cody's guide on booting up twrp to along with fstab and all the other stuff on his guide before doing this.
After you did his guide now it's time for mine if you can't boot up properly and mind you the LTE works and wifi but I can't seem to find out why it feels a bit slow but anyway.
Step 1. Download this update and put it(unzip file) into your adb/fastboot folder on your computer. https://drive.google.com/file/d/1kW-FAfXccQMBMX3DuGJ_p2r0moDiCYtR/view?usp=drivesdk
Step 2. Put your phone into fastboot mode
Step 3. Flash these in order
fastboot flash boot boot.img
fastboot flash system system.img_sparsechunk.0
fastboot flash system system.img_sparsechunk.1
fastboot flash system system.img_sparsechunk.2
fastboot flash system system.img_sparsechunk.3
fastboot flash oem oem.img
fastboot erase userdata
fastboot erase DDR
fastboot flash logo logo.bin
fastboot reboot
After that's done follow Cody's guide again and make sure you do it step by step and flash ONLY MAGISK 16.7
Click to expand...
Click to collapse
I keep getting cannot open error. any help would be greatly apprecciated

Successfully unbricked mi 9t

I would like to share my experienced how to unbricked my phone that stock on fastboot mode.why my phone is brick? The reason why my phone brick just because i restore the wrong system with the other vendor from china to miuimix and after restore it, it stock on fastboot mode unable to recover backup or to load in recovery mode. It didn't also turn off. l try to use miflash tool but it didn't work because of authorization not match to my phone, i tried other fastboot rom but it didnt work.. Try to boot twrp using fastboot boot but it didn't show any. I came up with the idea to flash. Img using cmd into the system that i restore, begin with the boot.img nothing will happen. Until i flash the vbmeta.img, then it begin to show boot img and eventually access twrp. I wiped everything and flash again a brandnew rom miui12 and it works well now.. Hope it will help to others to have an idea to unbrick there phone. ☺☺☺
flamedrops said:
I would like to share my experienced how to unbricked my phone that stock on fastboot mode.why my phone is brick? The reason why my phone brick just because i restore the wrong system with the other vendor from china to miuimix and after restore it, it stock on fastboot mode unable to recover backup or to load in recovery mode. It didn't also turn off. l try to use miflash tool but it didn't work because of authorization not match to my phone, i tried other fastboot rom but it didnt work.. Try to boot twrp using fastboot boot but it didn't show any. I came up with the idea to flash. Img using cmd into the system that i restore, begin with the boot.img nothing will happen. Until i flash the vbmeta.img, then it begin to show boot img and eventually access twrp. I wiped everything and flash again a brandnew rom miui12 and it works well now.. Hope it will help to others to have an idea to unbrick there phone.
Click to expand...
Click to collapse
Could you explain? My phone is stuck at fastboot and my pc doesn't detect the phone.
if u could access your phone via fastboot / adb then it wasn't a hardbrick , just a softbrick
TahmidZee said:
Could you explain? My phone is stuck at fastboot and my pc doesn't detect the phone.
Click to expand...
Click to collapse
You should check first the driver of your computer. Make sure you have the driver of your phone to your computer. After that you can check your device via adb by using commnd on cmd "adb devices".
instructions to flash:
fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img
fastboot erase recovery
fastboot flash recovery twrp-3.3.1-0-davinci.img
link: https://dl.twrp.me/davinci/twrp-3.3.1-0-davinci.img
w595shubham said:
instructions to flash:
fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img
fastboot erase recovery
fastboot flash recovery twrp-3.3.1-0-davinci.img
link: https://dl.twrp.me/davinci/twrp-3.3.1-0-davinci.img
Click to expand...
Click to collapse
VERY VERY THANX A LOT MAN...THX THX THX:highfive:
flamedrops said:
I would like to share my experienced how to unbricked my phone that stock on fastboot mode.why my phone is brick? The reason why my phone brick just because i restore the wrong system with the other vendor from china to miuimix and after restore it, it stock on fastboot mode unable to recover backup or to load in recovery mode. It didn't also turn off. l try to use miflash tool but it didn't work because of authorization not match to my phone, i tried other fastboot rom but it didnt work.. Try to boot twrp using fastboot boot but it didn't show any. I came up with the idea to flash. Img using cmd into the system that i restore, begin with the boot.img nothing will happen. Until i flash the vbmeta.img, then it begin to show boot img and eventually access twrp. I wiped everything and flash again a brandnew rom miui12 and it works well now.. Hope it will help to others to have an idea to unbrick there phone.
Click to expand...
Click to collapse
Can u please explain it. I am stuck with the same problem. I got success in flashing fastboot rom via miflash tool but it's still stuck in fastboot.
Thanks God Bless You.
---------- Post added at 05:01 PM ---------- Previous post was at 04:36 PM ----------
Deaddo6 said:
VERY VERY THANX A LOT MAN...THX THX THX:highfive:
Click to expand...
Click to collapse
This Helped You guys are angel
w595shubham said:
instructions to flash:
fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img
fastboot erase recovery
fastboot flash recovery twrp-3.3.1-0-davinci.img
link: https://dl.twrp.me/davinci/twrp-3.3.1-0-davinci.img
Click to expand...
Click to collapse
I have the same problem. I tried also this one, but nothing.
Everything goes ok in CMD, but when I type:
fastboot boot twrp.img
I get:
FAILED (remote: Failed to load/authenticate boot image: Load Error)
I still can't go in Recovery, neither turn off the phone. How solve this?!
dix93 said:
I have the same problem. I tried also this one, but nothing.
Everything goes ok in CMD, but when I type:
flash boot twrp.img
I get:
FAILED (remote: Failed to load/authenticate boot image: Load Error)
I still can't go in Recovery, neither turn off the phone. How solve this?!
Click to expand...
Click to collapse
flash boot twrp.img?
What do you wanna do?
If you want to boot into TWRP it should be
Code:
fastboot boot recovery "name-of- recovery.img"
If you want to flash TWRP it should be
Code:
fastboot flash recovery "name-of-recovery.img"
Your command
fastboot flash boot twrp.img should flash the recovery image over the boot image?
If you want to boot into twrp you should use the command above.
As far as I know not every device/firmware is able to boot into TWRP. It seems other users were able to do so with a mi 9t so my advice would be:
- Try another usb port / cable.
- Check twice if you renamed the twrp image correctly
- Try another twrp version (older one or unofficial)
w595shubham said:
instructions to flash:
fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img
fastboot erase recovery
fastboot flash recovery twrp-3.3.1-0-davinci.img
link: https://dl.twrp.me/davinci/twrp-3.3.1-0-davinci.img
Click to expand...
Click to collapse
Wolfcity said:
flash boot twrp.img?
What do you wanna do?
If you want to boot into TWRP it should be
Code:
fastboot boot recovery "name-of- recovery.img"
If you want to flash TWRP it should be
Code:
fastboot flash recovery "name-of-recovery.img"
Your command
fastboot flash boot twrp.img should flash the recovery image over the boot image?
If you want to boot into twrp you should use the command above.
As far as I know not every device/firmware is able to boot into TWRP. It seems other users were able to do so with a mi 9t so my advice would be:
- Try another usb port / cable.
- Check twice if you renamed the twrp image correctly
- Try another twrp version (older one or unofficial)
Click to expand...
Click to collapse
Thank you. Actually I was confused in the transcript here, I meant fast boot instead of flash.
But I figured out to use XiaomiFlash Tool to install a ROM via fastboot, and then reinstall a recovery.
The popup camera is not working good with the XIAOMI official rom (It tries to close the cam even if it is already closed). Now I'm trying to install Havoc OS to try to solve those problem, but it demands me the miui v11.0.4 or new (error in twrp), even if I have the miui v12.... trying to figure out why
for the guys whome are stuck on fastboot, you may try "XiaoMiTool V2". this bought my Mi9T from fastboot to life.
make sure all the drivers are installed as well. what's better is install usb drivers, reboot computer, enable usb debugging, connect the phone to computer, select transfer data, wait till the computer completely setup your phone, turn off phone and connect to computer, wait till computer detects and setup, put the phone on fastboot mode and connect, check whether computer shows android device... once everything are confirmed then proceed with flasing.. :good::good:
w595shubham said:
instructions to flash:
fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img
fastboot erase recovery
fastboot flash recovery twrp-3.3.1-0-davinci.img
link: https://dl.twrp.me/davinci/twrp-3.3.1-0-davinci.img
Click to expand...
Click to collapse
This command - fastboot flash vbmeta worked.
(using a version from Redispade for Grus - mi9se)
Unbricked my bootloop (recovery) after upgrading from miui 12 (android 10) to 12.5 android 11.
thanks!

Google apps ..."infecting" a fresh LOS install? Feedback on workaround?

Hi. I've noticed that after this last time I did a stock factory reflash using fastboot, every time I try to install LOS to the phone, Three google apps are left behind on the home screen. So did a factory recovery again, with the motorola recovery assistant. The apps were still there.
each time, booted TWRP, formatted data, then reboot into TWRP, then clear dalvik, system, data before trying to install LOS. The gapps fragments still showed up. What is known is that the play store and play services are not left behind, only the apps themselves remain., so they don't actually work, they just complain that play services is not present and exit.
Searched around on the internet but didn't really see a solution. so I came up with my own. I'm posting it here to get some feedback, and to maybe see if someone has a better way, because just flashing the stock rom was not solving this problem.
All steps in this walk through were done with adb fastboot and TWRP recovery.
##Make sure both of the above tools AND the USB drivers definitely work on your PC and device before doing this, you will be intentionally bricking your phone! I am not responsible for your device if you try this!##
Stuff you need:
a) The blankflash .zip from this guide: https://forum.xda-developers.com/motorola-one/development/blankflash-motorola-one-t4097391
b) The factory rom .zip for the baseband version currently running on your deen from lolinet.
c) The 8.1.0 rom .zip for your deen from lolinet.
d) LineageOS or other non-gapps rom of your choice. I used the one from this guide: https://forum.xda-developers.com/motorola-one/development/rom-lineage-17-1-motorola-one-t4131339
All Motorola One firmwares are here: https://mirrors.lolinet.com/firmware/moto/deen/official/
DO NOT UNPLUG THE PHONE WHILE DOING THIS. I don't know what will happen if you do.
Steps I did:
0) Unzip both of the roms and the blankflash into their own folders on the PC. Put LOS on your sdcard.
1) Reflash phone to factory stock. Do the initial set up and activate usb debugging in developer tools.
2) Reboot the phone into bootloader mode.
3) Flash the 8.1.0 rom. The phone will brick. It should brick to the blinking LED, but if it just bricks with no LED the PC should still pick it up and initialize the blankflash driver, as long as the usb drivers were installed correctly.
4) Flash the blankflash to get it back into bootloader.
5) Use these commands to flash only the BL, baseband, modem and stub partition from the factory stock flash .zip you downloaded from step b) above to your phone:
Code:
fastboot getvar max-sparse-size
fastboot oem fb_mode_set
fastboot flash partition gpt.bin
fastboot flash bootloader bootloader.img
fastboot flash modem_a NON-HLOS.bin
fastboot flash modem_b NON-HLOS.bin
fastboot flash fsg_a fsg.mbn
fastboot flash fsg_b fsg.mbn
fastboot erase modemst1
fastboot erase modemst2
fastboot flash dsp_a adspso.bin
fastboot flash dsp_b adspso.bin
fastboot flash boot_a boot.img
fastboot flash boot_b boot.img
fastboot flash system_a system_other.img
fastboot flash system_b system_other.img
fastboot oem fb_mode_clear
fastboot set_active b
fastboot reboot bootloader
6) boot into TWRP, wipe/format data. Type yes to confirm.
7) Reboot to bootloader
8) Boot to TWRP again
8) Wipe/advance wipe/system-data-dalvik ONLY
9) Install LOS from your sd card.
10) After LOS install, boot to bootloader
11) Getvar all, if active slot is not a, set it to a
12) Boot LOS.
Thoughts? Is there a better way to do this??
(edited to clarify the steps)

Android 11 Stock Images for unbricking X3 Superzoom with Fastboot Commands

I have bricked my X3 SZ and worked 1 week to get it unbricked (bricked after update of Android 11) myself, even the service centre not able to restore it and told me that may be Motherboard Problem. Finally by flashing Android 11 Stock images (created using OFP to CMD file converter), I restore the phone. I tried with unlocked Bootloader mode, don't know about locked bootloader state.
Simply download the stock images from the link and boot into bootloader mode, connect to PC, open Minimal ADB Fastboot and flash with fastboot commands. Required USB, Realme, Android Drivers to be installed in the PC. All your data will be lost and do it at your own risk.
Download all the images (userdata, recovery, boot, vbmeta & dtbo) and copy to the Minimal ADB Fastboot folder, run the CMD prompt and run the following commands:
fastboot devices (to check whether phone connected successfully or not)
fastboot erase userdata
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash vbmeta vbmeta.img
fastboot flash userdata userdata.img
fastboot flash dtbo dtbo.img
fastboot reboot
Done.. your X3 SZ must reboot and starts, if not you need to work around or contact SC.. Good Luck
Link Deleted
Thx
EDIT: Very informative and useful!
Cant get magisk_boot.img to work. Going to try orangefox recovery to install Magisk (root).
Tried numerous times to install it (here) took 3-4 hours to get Python to work in windows 7 (cus missing libraries, and newer version dont work). Its bricked the phone 3 times now.
I tried to install TWRP but failed, after I tried Orangefox, successfully installed but not able to boot, rebooting into recovery only, then I flashed only boot image using fastboot and able to boot but lost Custom Recovery. After all I stopped trying anything on X3 SZ
please provide new link

How To Guide [Chinese Version] Install RMX3300 A.19 stock firmware from global

Disclaimer: I am not responsible for bricked devices, dead SD cards, etc!
Warning: I didn't test this procedure, I did backup the images from stock Chinese version before installing global version but I didn't flash it back. Please test at your own risks!
1. Make sure your bootloader is unlocked
2. Download the images provided in the link below
3. Boot your device to recovery (hold volume up and power until reboot)
4. Wipe data
5. Boot your device to bootloader (hold volume down and power until reboot)
6. Connect your device to PC (make sure you have installed fastboot on your PC)
7. From windows command prompt cd into the folder containing the images
8. Run the following commands to flash all images
Code:
fastboot flash boot boot.img
fastboot flash dtbo dtbo.img
fastboot flash engineering_cdt engineering_cdt.img
fastboot flash metadata metadata.img
fastboot flash oplusreserve2 oplusreserve2.img
fastboot flash recovery recovery.img
fastboot flash splash splash.img
fastboot flash super super.img
fastboot flash vbmeta_system vbmeta_system.img
fastboot flash vbmeta_vendor vbmeta_vendor.img
fastboot flash vendor_boot vendor_boot.img
fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img
fastboot -w
When flashing super.img, if you get the message Invalid sparse file format at header magic, this is fine.
9. You should then be able to boot into system
Stock RMX3300 Chinese images: https://mega.nz/folder/Ilk2CBwb#VMlU6A8wcFJVU0twOD6vTA
All Stock RMX3300 Chinese images (slot B was the correct one when it was backed up): https://mega.nz/folder/d1dxEBTa#nzKU4KuhnDcHjK7MX_D2eA
myogui said:
免責聲明:我不對設備變磚、SD 卡死等負責!
警告:我沒有測試這個程序,我在安裝全球版本之前備份了庫存中文版本的圖像,但我沒有將其閃回。請您自擔風險進行測試!
1.確保您的引導加載程序已解鎖
2.下載以下鏈接中提供的圖片
3.引導您的設備進行恢復(保持音量和電源直到重新啟動)
4.擦除數據
5.將您的設備引導至引導加載程序(按住音量和電源直到重新啟動)
6.將您的設備連接到PC(確保您已在PC上安裝了fastboot)
7. 從 windows 命令提示符 cd 進入包含圖像的文件夾
8.運行以下命令刷寫所有鏡像
Code:
fastboot flash boot boot.img
fastboot flash dtbo dtbo.img
fastboot flash engineering_cdt engineering_cdt.img
fastboot flash 元數據 metadata.img
fastboot flash oplusreserve2 oplusreserve2.img
fastboot flash recovery recovery.img
fastboot flash splash splash.img
fastboot flash super super.img
fastboot flash vbmeta_system vbmeta_system.img
fastboot flash vbmeta_vendor vbmeta_vendor.img
fastboot flash vendor_boot vendor_boot.img
fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img
快速啟動 -w
刷新 super.img 時,如果您在 header magic 處收到 Invalid sparse file format 消息,這很好。
9.然後您應該能夠引導進入系統
庫存RMX3300中文圖片:https ://mega.nz/folder/Ilk2CBwb#VMlU6A8wcFJVU0twOD6vTA
All Stock RMX3300中文圖片(備份時槽B是正確的):https ://mega.nz/folder/d1dxEBTa#nzKU4KuhnDcHjK7MX_D2eA
Click to expand...
Click to collapse
非常感謝你, 我會嘗試
wronkians said:
非常感謝你, 我會嘗試
Click to expand...
Click to collapse
Good luck mate!
myogui said:
Disclaimer: I am not responsible for bricked devices, dead SD cards, etc!
Warning: I didn't test this procedure, I did backup the images from stock Chinese version before installing global version but I didn't flash it back. Please test at your own risks!
1. Make sure your bootloader is unlocked
2. Download the images provided in the link below
3. Boot your device to recovery (hold volume up and power until reboot)
4. Wipe data
5. Boot your device to bootloader (hold volume down and power until reboot)
6. Connect your device to PC (make sure you have installed fastboot on your PC)
7. From windows command prompt cd into the folder containing the images
8. Run the following commands to flash all images
Code:
fastboot flash boot boot.img
fastboot flash dtbo dtbo.img
fastboot flash engineering_cdt engineering_cdt.img
fastboot flash metadata metadata.img
fastboot flash oplusreserve2 oplusreserve2.img
fastboot flash recovery recovery.img
fastboot flash splash splash.img
fastboot flash super super.img
fastboot flash vbmeta_system vbmeta_system.img
fastboot flash vbmeta_vendor vbmeta_vendor.img
fastboot flash vendor_boot vendor_boot.img
fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img
fastboot -w
When flashing super.img, if you get the message Invalid sparse file format at header magic, this is fine.
9. You should then be able to boot into system
Stock RMX3300 Chinese images: https://mega.nz/folder/Ilk2CBwb#VMlU6A8wcFJVU0twOD6vTA
All Stock RMX3300 Chinese images (slot B was the correct one when it was backed up): https://mega.nz/folder/d1dxEBTa#nzKU4KuhnDcHjK7MX_D2eA
Click to expand...
Click to collapse
I followed the steps to the letter. Still stuck in a bootloop
Moaz.Magdy said:
I followed the steps to the letter. Still stuck in a bootloop
Click to expand...
Click to collapse
I was stuck in bootloop too when I flashed the global version, try running the last 2 commands or wiping data from recovery then the last 2 commands again.
Code:
fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img
fastboot -w
myogui said:
I was stuck in bootloop too when I flashed the global version, try running the last 2 commands or wiping data from recovery then the last 2 commands again.
Code:
fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img
fastboot -w
Click to expand...
Click to collapse
Thanks! that did the trick. Finally running global version (from your other post) on chinese phone.
SirGustav said:
Thanks! that did the trick. Finally running global version (from your other post) on chinese phone.
Click to expand...
Click to collapse
Great to hear, congrats!
thanks mate
stuck on bootloop for me. i tried to run last 2 commands again, then it still stucks.
Addswes said:
stuck on bootloop for me. i tried to run last 2 commands again, then it still stucks.
Click to expand...
Click to collapse
I am so close tried the same and still bootlooping for me to
Well damn. Switching to the cable from the realme gt 2 pro box fixed it weirdly!
Ok so I now have a brick as it flashed global and tried to lock bootloader. Guess there is no way to fix? EDL mode?
wildlime said:
Ok so I now have a brick as it flashed global and tried to lock bootloader. Guess there is no way to fix? EDL mode?
Click to expand...
Click to collapse
Don't feel bad I made the same mistake. EDL mode is all you can do. In my case I had a person do it for me (unbrick device). Cost me 15 dollars.
robert3892 said:
Don't feel bad I made the same mistake. EDL mode is all you can do. In my case I had a person do it for me (unbrick device). Cost me 15 dollars.
Click to expand...
Click to collapse
What service did you use?
I used the person in post number 8 here:
MSM Downloaf Tool for realme GT 2 Pro
Does anyone know how to access this tool? This is ridiculous, realme has no useful tool to flash their phones and the one that is useful are impossible to access... The only one that I have access was one patched for some especific Oppo phone...
forum.xda-developers.com
wildlime said:
What service did you use?
Click to expand...
Click to collapse
PM me, I'll give you the cheapest one
thank you , any body help me reup to google drive or other
empty.cad said:
thank you , any body help me reup to google drive or other
Click to expand...
Click to collapse
Up, I need it too. @myogui can you reup to GDrive?
Use Mega , 50 GB for free
Can I use this to re-flash my global device? There are some bugs with my phone and a factory reset doesn't seem to fix it.

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