[G 2014 Q&A, Help & Troubleshooting] SonicDcer:
I usually don't call for help but i've been here all day trying to solve this but i wan't able to.

I was trying to help a friend who bricked his XT1063 by flashing stock firmware to his phone, and between flashes, i ended up flashing my own phone (XT1072) by mistake with XT1063 firmware. The phone worked barely, i couldn't even pass the wifi connection screen. After that i tried flashing my phone back to XT1072 firmware but with no lock, i just keep getting (bootloader) Preflash validation failed. Strangely, i don't get these errors if i flash XT1063 firmware again.

I already unlocked my bootloader and managed to install TWRP recovery, tried CyanogenMod 13 but no signal/sim card.

I've trying flashing several ROMs i got from here:

firmware . center/firmware/Motorola/Moto%20G%20%282nd%20gen-2014%29/Stock/XT1072/

But with no luck.

Here is the log when trying to flash XT1072 firmware:

adb reboot bootloader

mfastboot.exe flash partition gpt.bin

mfastboot.exe flash motoboot motoboot.img

mfastboot.exe flash logo logo.bin

mfastboot.exe flash boot boot.img

mfastboot.exe flash recovery recovery.img

mfastboot.exe flash system system.img_sparsechunk.0

mfastboot.exe flash system system.img_sparsechunk.1

mfastboot.exe flash system system.img_sparsechunk.2

mfastboot.exe flash system system.img_sparsechunk.3

mfastboot.exe flash system system.img_sparsechunk.4

mfastboot.exe flash modem NON-HLOS.bin

mfastboot.exe erase modemst1

mfastboot.exe erase modemst2

mfastboot.exe flash fsg fsg.mbn

mfastboot.exe erase cache

mfastboot.exe erase userdata

mfastboot.exe reboot

Restore to Original Stock Motorola Firmware for Motorola

Moto G 2014 Titan(XT1068) Provided with lock Bootloader

Please Do press Thanks Button If u really liked My Work [MENTION=5803479]bhu999[/MENTION]

error: device not found

target max-sparse-size: 256MB

sending 'partition' (32 KB)...

OKAY [ 0.030s]

writing 'partition'...

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 0.302s

target max-sparse-size: 256MB

sending 'motoboot' (2184 KB)...

OKAY [ 0.111s]

writing 'motoboot'...

(bootloader) flashing tz ...

(bootloader) flashing rpm ...

(bootloader) flashing sdi ...

(bootloader) flashing aboot ...

(bootloader) flashing sbl1 ...

OKAY [ 1.141s]

finished. total time: 1.252s

target max-sparse-size: 256MB

sending 'logo' (697 KB)...

OKAY [ 0.084s]

writing 'logo'...

OKAY [ 0.318s]

finished. total time: 0.403s

target max-sparse-size: 256MB

sending 'boot' (10200 KB)...

OKAY [ 0.387s]

writing 'boot'...

OKAY [ 0.554s]

finished. total time: 0.943s

target max-sparse-size: 256MB

sending 'recovery' (10280 KB)...

OKAY [ 0.388s]

writing 'recovery'...

OKAY [ 0.356s]

finished. total time: 0.746s

target max-sparse-size: 256MB

sending 'system' (256869 KB)...

OKAY [ 8.078s]

writing 'system'...

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 8.187s

target max-sparse-size: 256MB

sending 'system' (257186 KB)...

OKAY [ 8.091s]

writing 'system'...

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 8.194s

target max-sparse-size: 256MB

sending 'system' (258517 KB)...

OKAY [ 8.130s]

writing 'system'...

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 8.233s

target max-sparse-size: 256MB

sending 'system' (261373 KB)...

OKAY [ 8.218s]

writing 'system'...

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 8.358s

target max-sparse-size: 256MB

sending 'system' (67668 KB)...

OKAY [ 2.167s]

writing 'system'...

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 2.218s

target max-sparse-size: 256MB

sending 'modem' (60992 KB)...

OKAY [ 1.958s]

writing 'modem'...

OKAY [ 1.569s]

finished. total time: 3.528s

erasing 'modemst1'...

OKAY [ 0.021s]

finished. total time: 0.021s

erasing 'modemst2'...

OKAY [ 0.044s]

finished. total time: 0.045s

target max-sparse-size: 256MB

sending 'fsg' (320 KB)...

OKAY [ 0.101s]

writing 'fsg'...

OKAY [ 0.085s]

finished. total time: 0.187s

erasing 'cache'...

OKAY [ 0.356s]

finished. total time: 0.357s

erasing 'userdata'...

OKAY [ 2.493s]

finished. total time: 2.494s

rebooting...

finished. total time: 0.002s

Press any key to Exit

Press any key to continue . . .

Help would be greatly appreciated.

Thank you!