Preloader validation failed Error. Bootloader is unlocked.

[jbhntr861]

I am getting a preloader validation error although my bootloader is unlocked. Stock ROM Moto G pure Ellis. Stuck in bootloop. The phone has had an invalid image flashed to boot.

I am trying to flash another the stock ROM boot.img to boot_a. I am getting error "preloader validation failed." My bootloader is unlocked using Motorola's unlock key through their website. Any idea why it would give this error with unlocked bootloader?

Also have tried

sudo fastboot ANDROID_PRODUCT_OUT='./' flashall -w

flashing boot_a

and is stuck at flashing boot_a.
This is with the Moto Ellis stock ROM folder.

 

[ocnbrze]

how did you phone get this way? why is your bootloader unlocked? were you trying to root it? what exactly happened to get your phone in this state? are you sure that you are flashing the correct stock rom(firmware)? firmware are very device specific, so make sure you have the right one.