Soft bricked Moto E

Renny

Padawan
Rooted, unlocked Moto E.

I unrooted and relocked the bootloader to install Lollipop. Succeeded and installed the soak test version.

Here's where I screwed up. I tried downgrading to 4.4.4 using the factory firmware and now I'm unable to mount any partition or install any boot image. Everytime I try installing img via fastboot I get a "Prefetch validation failed". When I start the phone I get "Invalid boot image header".

What works:
Recovery (TWRP) - Can't install anything because cache, data, system cannot be mounted.
 
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