Hey there, thanks for viewing. Before posting here, I have well enough spent 6+ effective hours (whole day yesterday) to find a solution for this. Unfortunately, I was not successful.
I own a Moto G (XT1033) Dual Sim India Version. Initially, I was running an android 5.02 stock (rooted) with unlocked bootloader when I get a notification about a system update (for 5.1.1). Exited, I downloaded the update and tried to install it, but the OTA wouldn't install. Later, I figured it may be because my phone had an unlocked bootloader. As a result, I tried to re-lock the bootloader by installing 5.0.2 stock again from this guide: http://forum.xda-developers.com/showthread.php?t=2700502 .
Everything was successful and the bootloader was locked again
. But this time instead of OTA, I pasted this file Blur_Version.221.21.56.falcon_umtsds.AsiaRetail.en.03.zip which I found in some webpage I don't remember. The update was successfull. Now due to some stupid reason, I wanted to do the whole thing again and and do the OTA udpate this time. This is where the problem begin.
In the bootloader I typed the exact same commands and used the exact same files, but this time, this is what I got:
Attaching the screenshot, please have a look.
Also adding a pic of my phone's bootloader screen for the error message it receives.
Note that I get the same error for sparsechunk command which comes later. I have tried 10-20 guides, most of them from XDA for the same "Preflash Validatin Failed" error, but none of them fixes my problem.
Bottomline, whatever on earth I do, whatever recovery, stock ROM's, fastboot's I download and install, as soon as I type the command "mfastboot.exe flash partition gpt.bin", I get the same preflash validation failed error message again and again and again!!! :crying: I get the same error for the rest of the commands.
Note that if I try to flash any other custom ROM's via TWRP or any other recovery, I am easily able to do it, but that way I won't be able to lock the bootloader ever again. The only way we can lock the bootloader is something which is not working.
Is it really impossible for me to downgrade now?
Few posts which I have went through already but didn't work:
http://forum.xda-developers.com/moto-g/help/gpe-pre-flash-validation-failed-gpt-t2836073
http://forum.xda-developers.com/moto-g/help/bootloader-preflash-validation-failed-t2834023
I have tried more, but can't find the links now.
Please help :crying:
Thanks!
I own a Moto G (XT1033) Dual Sim India Version. Initially, I was running an android 5.02 stock (rooted) with unlocked bootloader when I get a notification about a system update (for 5.1.1). Exited, I downloaded the update and tried to install it, but the OTA wouldn't install. Later, I figured it may be because my phone had an unlocked bootloader. As a result, I tried to re-lock the bootloader by installing 5.0.2 stock again from this guide: http://forum.xda-developers.com/showthread.php?t=2700502 .
Everything was successful and the bootloader was locked again
. But this time instead of OTA, I pasted this file Blur_Version.221.21.56.falcon_umtsds.AsiaRetail.en.03.zip which I found in some webpage I don't remember. The update was successfull. Now due to some stupid reason, I wanted to do the whole thing again and and do the OTA udpate this time. This is where the problem begin.In the bootloader I typed the exact same commands and used the exact same files, but this time, this is what I got:
HTML:
C:\Users\Prasannjeet\Desktop\TWRP\Fastboot>mfastboot.exe flash partition gpt.bin
target max-sparse-size: 256MB
sending 'partition' (32 KB)...
OKAY [ 0.103s]
writing 'partition'...
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 0.425sAlso adding a pic of my phone's bootloader screen for the error message it receives.
Note that I get the same error for sparsechunk command which comes later. I have tried 10-20 guides, most of them from XDA for the same "Preflash Validatin Failed" error, but none of them fixes my problem.
Bottomline, whatever on earth I do, whatever recovery, stock ROM's, fastboot's I download and install, as soon as I type the command "mfastboot.exe flash partition gpt.bin", I get the same preflash validation failed error message again and again and again!!! :crying: I get the same error for the rest of the commands.
Note that if I try to flash any other custom ROM's via TWRP or any other recovery, I am easily able to do it, but that way I won't be able to lock the bootloader ever again. The only way we can lock the bootloader is something which is not working.
Is it really impossible for me to downgrade now?
Few posts which I have went through already but didn't work:
http://forum.xda-developers.com/moto-g/help/gpe-pre-flash-validation-failed-gpt-t2836073
http://forum.xda-developers.com/moto-g/help/bootloader-preflash-validation-failed-t2834023
I have tried more, but can't find the links now.
Please help
:crying: Thanks!
