Cant flash custom recovery - LG V10 Q&A, Help & Troubleshooting

I am trying to flash twrp or any custom recovery image so that I could root my LGv10, I am running Android 6.0.
When I boot my phone into fastboot mode I dont get the fastboot options just the options to exit or restart. However I still can run commands through adb, I try running the command to flash the custom image and I keep getting this.
Code:
C:\adb>fastboot flash recovery recovery.img
target reported max download size of 536870912 bytes
sending 'recovery' (5158 KB)...
OKAY [ 0.160s]
writing 'recovery'...
FAILED (remote: unknown command)
finished. total time: 0.185s
If I try to start up in recovery mode I get an android with a red error triangle, preventing me from rooting. Is there anyway I can fix this? any help will be appreciated as I've looked already and cannot seem to find a fix to this problem.

Hi, which model of the V10 do you own?
Please note that bootloader unlock and installation of a custom recovery is only officially supported on the T-Mobile Version of the V10 and the European V10 with the model number H960A. On the H960A you need to unlock your bootloader first. Otherwise flasing recovery fails.

cyvr1 said:
Hi, which model of the V10 do you own?
Please note that bootloader unlock and installation of a custom recovery is only officially supported on the T-Mobile Version of the V10 and the European V10 with the model number H960A. On the H960A you need to unlock your bootloader first. Otherwise flasing recovery fails.
Click to expand...
Click to collapse
Thanks for the reply!
My LGv10 is the T-Mobile version, model number LG-H901. I'm running Marshmallow 6.0, My bootloader is unlocked I'm still getting the same problem.
Not sure what to try anymore

Same exact issue I have. Don't know what else to do.

I was getting that yesterday, though I found another method that seems to have worked, only issue with that one is that whenever I try I flash a ROM, it fails with error 7.
https://dottech.org/198032/how-to-root-lg-v10-t-mobile-h901-on-android-6-0-marshmallow/
This was the method I used, though I didn't do it properly since I couldn't figure out what to do with the kdz file. But I do have TWRP recovery installed to my phone now.

Related

International Unlocked Atrix - Failed to install CWM recovery

Hi,
I have an unlocked Atrix, and I have successfully performed the following:
1. Rooted the device using SuperOneClick v.2.3.3
2. Installed ROM Manager and installed CWM Recovery
However, I am unable to get into CWM Recovery. I get the following errors, when I try to boot to recovery using the ROM manager:
Code:
Failed to boot 2
Starting RSD mode
I have also attempted to installed the recovery using fastboot method, but also failed to do so. Here are the error messages:
Code:
C:\TEMP\AtrixRecovery>fastboot flash recovery recovery-clockwork-touch-5.8.1.8-olympus.img
sending 'recovery' (3992 KB)...
OKAY [ 0.233s]
writing 'recovery'...
FAILED (remote: (00180002))
finished. total time: 0.297s
I have also lost the Android Recovery as I am unable to have the device respond to me after I tap the bottom right corner after going to Android Recovery. So I cannot perform a hard reset too.
Any advise to help me move along? I would like to install a custom ROM, and if that is not possible I would like to at least return to the stock ROM.
Thanks!
How is rooting relevant?
It seems you forgot to unlock the BL.
ravilov said:
How is rooting relevant?
It seems you forgot to unlock the BL.
Click to expand...
Click to collapse
May be I misunderstood.
Help me understand, I searched for what is the difference between locked and unlocked. My understanding is as long as I can use SIM card from different carrier, I have an unlocked phone, and unlocking is not necessary. Is this wrong?
Assuming I am wrong can you advise how to unlock the BL?
Thanks.
You are very wrong. Rooting has nothing to do with BL unlock, just as BL unlock has nothing to do with SIM unlock.
Please follow the unlock/flash procedures PRECISELY.

Help please?????

Hi all,
Today I tried to root my LG G5 H830 but with an older method for Marshmallow(in the video i was watching the version wasn't even specified so I was unaware and I believed that the version of the phone did not really matter). I proceeded to follow this man's instructions @: "How to Root T-Mobile LG G5!" by "Max Lee" on Youtube(as a new user i cannot post links ) I unlocked my bootloader, got drivers and followed his instructions up onto an error on LGUP. Basically the error's purpose was to tell me that Nougat is not supported. So I had no choice but to reboot my phone and go through the android initializing setup.
After realizing the error of my ways I then found this post here via Google Search: "Install TWRP Recovery and Root LG G5 on Android Nougat | DroidViews" to install TWRP. Now my bootloader is unlocked and I have no root. The only problem here is that whenever I go into developer options and try to toggle 'OEM unlock' on it won't let me. The OEM unlock setting is grey-ed out and I am unable to toggle it!! This is what I need help with! Although my bootloader is very much infact unlocked I think some error occurred to where now I cant toggle my OEM unlock thus I am unable to flash a TWRP recovery via fastboot!
If I reboot into my bootloader and run the command "fastboot flash recovery recovery.img" i get this:
Code:
target reported max download size of 536870912 bytes
sending 'recovery' (18668 KB)...
OKAY [ 0.419s]
writing 'recovery'...
FAILED (remote: unknown command)
finished. total time: 0.435s
I even ignored the error and tried to boot into recovery manually and i just get the stock recovery.
Please help me guys
What about locking the bootloader again and unlocking it after that with the newer video you used?
MAGNVM said:
Hi all,
Today I tried to root my LG G5 H830 but with an older method for Marshmallow(in the video i was watching the version wasn't even specified so I was unaware and I believed that the version of the phone did not really matter). I proceeded to follow this man's instructions @: "How to Root T-Mobile LG G5!" by "Max Lee" on Youtube(as a new user i cannot post links ) I unlocked my bootloader, got drivers and followed his instructions up onto an error on LGUP. Basically the error's purpose was to tell me that Nougat is not supported. So I had no choice but to reboot my phone and go through the android initializing setup.
After realizing the error of my ways I then found this post here via Google Search: "Install TWRP Recovery and Root LG G5 on Android Nougat | DroidViews" to install TWRP. Now my bootloader is unlocked and I have no root. The only problem here is that whenever I go into developer options and try to toggle 'OEM unlock' on it won't let me. The OEM unlock setting is grey-ed out and I am unable to toggle it!! This is what I need help with! Although my bootloader is very much infact unlocked I think some error occurred to where now I cant toggle my OEM unlock thus I am unable to flash a TWRP recovery via fastboot!
If I reboot into my bootloader and run the command "fastboot flash recovery recovery.img" i get this:
Code:
target reported max download size of 536870912 bytes
sending 'recovery' (18668 KB)...
OKAY [ 0.419s]
writing 'recovery'...
FAILED (remote: unknown command)
finished. total time: 0.435s
I even ignored the error and tried to boot into recovery manually and i just get the stock recovery.
Please help me guys
Click to expand...
Click to collapse
Did you try to run the terminal/cmd as an administrator/root?
Sent from my LG-H840 using Tapatalk

Help please??

Hi all,
Today I tried to root my LG G5 H830 but with an older method for Marshmallow(in the video i was watching the version wasn't even specified so I was unaware and I believed that the version of the phone did not really matter). I proceeded to follow this man's instructions @: "How to Root T-Mobile LG G5!" by "Max Lee" on Youtube(as a new user i cannot post links ) I unlocked my bootloader, got drivers and followed his instructions up onto an error on LGUP. Basically the error's purpose was to tell me that Nougat is not supported. So I had no choice but to reboot my phone and go through the android initializing setup.
After realizing the error of my ways I then found this post here via Google Search: "Install TWRP Recovery and Root LG G5 on Android Nougat | DroidViews" to install TWRP. Now my bootloader is unlocked and I have no root. The only problem here is that whenever I go into developer options and try to toggle 'OEM unlock' on it won't let me. The OEM unlock setting is grey-ed out and I am unable to toggle it!! This is what I need help with! Although my bootloader is very much infact unlocked I think some error occurred to where now I cant toggle my OEM unlock thus I am unable to flash a TWRP recovery via fastboot!
If I reboot into my bootloader and run the command "fastboot flash recovery recovery.img" i get this:
Code:
target reported max download size of 536870912 bytes
sending 'recovery' (18668 KB)...
OKAY [ 0.419s]
writing 'recovery'...
FAILED (remote: unknown command)
finished. total time: 0.435s
I even ignored the error and tried to boot into recovery manually and i just get the stock recovery.
Please help me guys
duplicate thread >>> original here https://forum.xda-developers.com/lg-g5/help/help-please-t3601192
thread closed

Fastboot can't flash anything after upgrade to B389

Hi~
My phone is huawei honor 7.
Fist, I'm sure I have unlocked my bootloader.
I upgrade to B388 today by fastboot flash cust.img and boot.img and system.img which extract from huawei's official update.app.
Then the phone reboot and I leaved for a while, but when I come back, I found it has replace my twrp by official recovery.
So I just reset my phone and wipe cache. When I reboot to system, I receive an OTA update, and I choose "Download latest full package" then the phone finish update by itself. So my phone now running EMUI 4.0.3 B389.
Finally, I enter fastboot model by "adb reboot bootloader" and try to flash twrp, it tell me:
Code:
PS E:\Root\platform-tools> fastboot flash recovery E:\Root\twrp.img
target reported max download size of 471859200 bytes
sending 'recovery' (25890 KB)...
OKAY [ 0.563s]
writing 'recovery'...
FAILED (remote: Command not allowed)
finished. total time: 0.570s
I try to flash some old version system, but I got same error. But I type " fastboot oem get-bootinfo" It shows that I was unlocked.
So how can I flash twrp again and Root my phone?
--------------------------
By the way, I found I even can not relock my oem by now!
Code:
C:\Users\omicron3069>fastboot oem relock 23**********9971
...
FAILED (remote: stat not match)
finished. total time: 0.000s
C:\Users\omicron3069>fastboot reboot
rebooting...
finished. total time: 0.125s
hmmmm... solve this weird problem by turn on "unknown source " switch in security setting.
I have the same problem. After B396 update I can not load anything in bootloader mode. I also get a "Software Install Failed" error when I try to return to an older version using dload or update.zip.
Edit: My bootloader is unlocked but i can't relock or unlock it again.
How can i solve this problem? Please someone help me!
alperenadalar said:
I have the same problem. After B396 update I can not load anything in bootloader mode. I also get a "Software Install Failed" error when I try to return to an older version using dload or update.zip.
Edit: My bootloader is unlocked but i can't relock or unlock it again.
How can i solve this problem? Please someone help me!
Click to expand...
Click to collapse
1. If you want to downgrade your firmware version, you need flash a downgrade package first by use dload method. Generally, you can find this kind of package in huawei hiclub ROM thread.
This is Chinese hiclub (club.huawei.com/thread-7268260-1-2.html) that contain this kind of package.
2. I solve this problem by open that unknown source switch . If you don't know where it is, just search it in settings.
3. I know a tool named HiSuit, which may can help you to downgrade your system.
4. Also, make sure you have turn off that f**ing "Phone Finder"!! This is just a s**t made by huawei!!
Hope those can help you~
omicron3069 said:
1. If you want to downgrade your firmware version, you need flash a downgrade package first by use dload method. Generally, you can find this kind of package in huawei hiclub ROM thread.
This is Chinese hiclub (club.huawei.com/thread-7268260-1-2.html) that contain this kind of package.
2. I solve this problem by open that unknown source switch . If you don't know where it is, just search it in settings.
3. I know a tool named HiSuit, which may can help you to downgrade your system.
4. Also, make sure you have turn off that f**ing "Phone Finder"!! This is just a s**t made by huawei!!
Hope those can help you~
Click to expand...
Click to collapse
I will try downgrade package. I already turn on unknown sources and disbled phone finder but still i can't flash any firmware nor image via fastboot or recovery.
alperenadalar said:
I will try downgrade package. I already turn on unknown sources and disbled phone finder but still i can't flash any firmware nor image via fastboot or recovery.
Click to expand...
Click to collapse
Have you wiped system? That could be the error that twrp gives.
Edit: Don't forget to make a backup of system and data!
Even if the bootloader screen says that the phone is unlocked, in reality it isn't and that's why you are getting the command not allowed text. Just type fastboot oem unlock and your code to unlock it again. The same problem is present on many Huawei phones like the P8 and P9 Lite I've tested after installing an update.
if you want to emui4.0 to 3.0 it was impossible
HUAWEI big chrysanthemum and foolish engineer doesnt want you to flash emui3.0 But you can use the hisuite to demotion.I hope reply is very useful to you

Recover H932 with stuck boot

Anyway to recover my device that:
Fastboot accessible
Lost twrp
Download mode doesn't seem to work (it restart itself after 15 second or so)
Stuck on Tmobile bootup
Was trying to install exposed
factory reset > flash 20o > flash framework
Now can't seem to get it to boot up
Try to use fastboot to flash twrp
C:\adb>fastboot flash recovery twrp.img
target reported max download size of 536870912 bytes
sending 'recovery' (30860 KB)...
FAILED (remote: unknown command)
finished. total time: -0.000s
try fastboot update.zip
C:\adb>fastboot update update.zip
archive does not contain 'android-info.txt'
error: update package 'update.zip' has no android-info.txt
LG Up does detect device, but trying to Refurb or anything will get stuck at 4% waiting for device
Thanks
did you figure it out?
somekids said:
Anyway to recover my device that:
Fastboot accessible
Lost twrp
Download mode doesn't seem to work (it restart itself after 15 second or so)
Stuck on Tmobile bootup
Click to expand...
Click to collapse
If you have T-mobile H932 you do not have fastboot flash commands. You can boot into fastboot, but it's basically useless.
somekids said:
Try to use fastboot to flash twrp
C:\adb>fastboot flash recovery twrp.img
target reported max download size of 536870912 bytes
sending 'recovery' (30860 KB)...
FAILED (remote: unknown command)
finished. total time: -0.000s
try fastboot update.zip
C:\adb>fastboot update update.zip
archive does not contain 'android-info.txt'
error: update package 'update.zip' has no android-info.txt
Click to expand...
Click to collapse
T-mobile H932 does not have fastboot flash commands so you can't use fastboot to install TWRP with fastboot. That's the whole reason @runningnak3d had to create a whole new method -- using a Linux boot flash drive while on 10d Nougat -- to get TWRP onto T-mobile H932. You know this if you rooted your T-mobile H932!
You will have to do that all over again if you really lost TWRP.
The T-mobile H932 is a standalone island unto itself and is the hardest V30 variant to install TWRP on and root. All the others use the WTF method.
This and another reason is why only T-Mobile customers should use T-Mobile H932.
---------- Post added at 09:45 AM ---------- Previous post was at 09:37 AM ----------
somekids said:
LG Up does detect device, but trying to Refurb or anything will get stuck at 4% waiting for device
Click to expand...
Click to collapse
Especially if you updated to Pie KDZ/TWRP-flashable zip, make sure you are using the latest Dev Patched LGUP from T-mobile H932 Pie KDZ thread. Any earlier dev patched LGUP will only work on Oreo or lower. Follow the installation instructions, be sure to UNinstall any prior versions.
[H932][STOCK][PIE]LG V30 U.S. T-Mobile H932 H93230d_00_0902.KDZ
https://forum.xda-developers.com/lg-v30/development/h932-lg-v30-s-t-mobile-h932-t3952258
ChazzMatt said:
If you have T-mobile H932 you do not have fastboot flash commands. You can boot into fastboot, but it's basically useless.
Click to expand...
Click to collapse
Well, you can still use H932 fastboot to unlock bootloader. And no hoops required to do that. And that's just about the only good thing about H932 ?
sadly, it was a year ago. I've noticed that installing xposed is dangerous as flashing custom rom even using magisk module, it sometimes make your phone boot loop, or fail to boot at all. any emergency tools such as Recovery, Laf download mode, should be present on their phone (at least one)

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