Mira a mi me pasa este problema
C:\Program Files (x86)\Minimal ADB and Fastboot>mfastboot flash partition gpt.bin
target max-sparse-size: 256MB
sending 'partition' (32 KB)...
OKAY [ 0.019s]
writing 'partition'...
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 0.477s