[X Style (Pure) Q&A, Help & Troubleshooting] lukegvoigt:
C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot flash partition gpt.bin

target reported max download size of 536870912 bytes

sending 'partition' (32 KB)...

OKAY [ 0.009s]

writing 'partition'...

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 0.371s

C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot flash bootloader bootloader.img

error: cannot load 'bootloader.img'

C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot flash logo logo.bin

target reported max download size of 536870912 bytes

sending 'logo' (3687 KB)...

OKAY [ 0.103s]

writing 'logo'...

OKAY [ 0.067s]

finished. total time: 0.174s

C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot flash boot boot.img

error: cannot load 'boot.img'

C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot flash recovery recovery.img

error: cannot load 'recovery.img'

C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot flash system system.img_sparsechunk.0

error: cannot load 'system.img_sparsechunk.0'

C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot flash system system.img_sparsechunk.1

error: cannot load 'system.img_sparsechunk.1'

C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot flash system system.img_sparsechunk.2

error: cannot load 'system.img_sparsechunk.2'

C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot flash system system.img_sparsechunk.3

error: cannot load 'system.img_sparsechunk.3'

C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot flash system system.img_sparsechunk.4

error: cannot load 'system.img_sparsechunk.4'

C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot flash system system.img_sparsechunk.5

error: cannot load 'system.img_sparsechunk.5'

C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot flash system system.img_sparsechunk.6

error: cannot load 'system.img_sparsechunk.6'

C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot flash system system.img_sparsechunk.7

error: cannot load 'system.img_sparsechunk.7'

C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot flash system system.img_sparsechunk.8

error: cannot load 'system.img_sparsechunk.8'

C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot flash system system.img_sparsechunk.9

error: cannot load 'system.img_sparsechunk.9'

C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot flash modem NON-HLOS.bin

error: cannot load 'NON-HLOS.bin'

C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot erase modemst1

erasing 'modemst1'...

OKAY [ 0.016s]

finished. total time: 0.018s

C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot erase modemst2

erasing 'modemst2'...

OKAY [ 0.010s]

finished. total time: 0.016s

C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot flash fsg fsg.mbn

target reported max download size of 536870912 bytes

sending 'fsg' (1356 KB)...

OKAY [ 0.046s]

writing 'fsg'...

OKAY [ 0.046s]

finished. total time: 0.098s

C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot flash bluetooth BTFM.bin

error: cannot load 'BTFM.bin'

C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot erase cache

erasing 'cache'...

OKAY [ 0.019s]

finished. total time: 0.021s

C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot erase userdata

erasing 'userdata'...

OKAY [ 0.172s]

finished. total time: 0.175s

C:\Users\\Downloads\Blur_Version.23.21.18.clark_retus.retus.en.US>fastboot reboot

I've reinstalled fastboot drivers. My phone won't boot up. It shows the "bootloader is unlocked" screen, the shows the "M" Motorola logo, then goes black.

I fortunately have a backup phone, but I am not getting anywhere.

Any help is appreciated.