Tuesday, 6 October 2015

flashing bootloader -- preflash validation failed (after flash-all.bat)



I tried to upgrade from Android M preview 3 to 6.0 Marshmallow using the flash-all.bat.

There were error messages and the phone would not boot into recovery.

I went back to fastboot to flash files one at a time.

When I try to flash bootloader it fails with the "Preflash validation error" message.

Is this telling me that I can't flash the bootloader because it was already flashed during the (unsuccessful) flash-all.bat?

Can I flash the other files to get the phone back to working order?



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