Friday, May 13, 2016

Unlocked (T-Mobile) LG V10 won't flash TWRP image

Hi.

Just got a new T-Mobile LG V10 with Android v6.0 Marshmallow, successfully unlocked the bootloader (see below for verification data)...but, can't get TWRP recovery image to flash.

First, I performed the following steps on a WIN10 laptop to unlock the bootloader :

1) Setup ADB and Fastboot (I used Minimal ADB & Fastboot)

2) Enabled Developer options on LG V10

3) Enabled OEM unlock and USB debugging on LG V10

4) Connected V10 to PC and issued the following command to boot into bootloader mode:
adb reboot bootloader

5) Once in bootloader mode, I issued the following command to unlock bootloader on LG V10:
fastboot oem unlock

6) Once bootloader was unlocked, I rebooted the bootloader mode with the following command:
fastboot reboot-bootloader

I then booted out of fastboot, disconnected my phone from the laptop, downloaded TWRP recovery twrp-2.8.7.1-h901.img into the same folder as adb/fastboot, and did the following steps:

1) I opened a CMD window in that same folder

2) I connected the LG V10 to the PC via USB, and typed the following into the command window into bootloader/fastboot mode:
adb reboot bootloader

3) Once it booted into bootloader mode, I issued the following command to flash the TWRP recovery .img file:
fastboot flash recovery twrp-2.8.7.1-h901.img

The CMD window gave the following data:

target reported max download size of 536870912 bytes
sending 'recovery'...
OKAY [ 1.218s]
writing 'recovery'
FAILED (remote: unknown command)
finished. total time: 1.237s


Just to check that adb/fastboot was seeing my phone...and, that it was actually unlocked, I then typed in:

fastboot oem unlock
and got the following reply:
(bootloader) Device already : unlocked!

I then typed in: fastboot devices
and got the following reply:
b5e5400a fastboot

Don't want to mess any more with this, until I can get some guidance from the forum. Better to wait, than to brick my new phone!

Thanks in advance for whatever help you can offer.
PJ Arts


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