[Moto G4 Plus Questions & Answers] axle119:
C:\adb>fastboot flash partition gpt.bin

target reported max download size of 536870912 bytes

sending 'partition' (32 KB)...

OKAY [ 0.031s]

writing 'partition'...

(bootloader) Security version downgrade

(bootloader) Image primary_gpt failed validation

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 0.094s

C:\adb>fastboot flash bootloader bootloader.img

target reported max download size of 536870912 bytes

sending 'bootloader' (3651 KB)...

OKAY [ 0.172s]

writing 'bootloader'...

(bootloader) validating: bootloader.default.xml ...

(bootloader) Security version downgrade

(bootloader) Image aboot failed validation

(bootloader) Preflash validation failed

(bootloader) will fail: flash:aboot

FAILED (remote failure)

finished. total time: 0.319s

C:\adb>fastboot flash logo logo.bin

target reported max download size of 536870912 bytes

sending 'logo' (1848 KB)...

OKAY [ 0.094s]

writing 'logo'...

OKAY [ 0.078s]

finished. total time: 0.172s

C:\adb>fastboot flash boot boot.img

target reported max download size of 536870912 bytes

sending 'boot' (16384 KB)...

OKAY [ 0.687s]

writing 'boot'...

(bootloader) Image boot failed validation

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 0.891s

C:\adb>fastboot flash recovery recovery.img

target reported max download size of 536870912 bytes

sending 'recovery' (16484 KB)...

OKAY [ 0.664s]

writing 'recovery'...

(bootloader) Image recovery failed validation

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 0.883s

C:\adb>fastboot flash system system.img_sparsechunk.0

target reported max download size of 536870912 bytes

sending 'system' (257278 KB)...

OKAY [ 9.982s]

writing 'system'...

(bootloader) Image s failed validation

(bootloader) Invalid signed image

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 10.097s

C:\adb>fastboot flash system system.img_sparsechunk.1

target reported max download size of 536870912 bytes

sending 'system' (258607 KB)...

OKAY [ 10.125s]

writing 'system'...

(bootloader) Invalid signed image

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 10.157s

C:\adb>fastboot flash system system.img_sparsechunk.2

target reported max download size of 536870912 bytes

sending 'system' (258384 KB)...

OKAY [ 10.076s]

writing 'system'...

(bootloader) Invalid signed image

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 10.107s

C:\adb>fastboot flash system system.img_sparsechunk.3

target reported max download size of 536870912 bytes

sending 'system' (252313 KB)...

OKAY [ 9.973s]

writing 'system'...

(bootloader) Invalid signed image

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 10.004s

C:\adb>fastboot flash system system.img_sparsechunk.4

target reported max download size of 536870912 bytes

sending 'system' (254404 KB)...

OKAY [ 10.017s]

writing 'system'...

(bootloader) Invalid signed image

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 10.064s

C:\adb>fastboot flash system system.img_sparsechunk.5

target reported max download size of 536870912 bytes

sending 'system' (258060 KB)...

OKAY [ 10.114s]

writing 'system'...

(bootloader) Invalid signed image

(bootloader) Preflash validation failed

FAILED (remote failure)

finished. total time: 10.161s

C:\adb>fastboot flash modem NON-HLOS.bin

target reported max download size of 536870912 bytes

sending 'modem' (76857 KB)...

OKAY [ 3.038s]

writing 'modem'...

OKAY [ 2.036s]

finished. total time: 5.075s

C:\adb>fastboot erase modemst1

erasing 'modemst1'...

OKAY [ 0.047s]

finished. total time: 0.047s

C:\adb>fastboot erase modemst2

erasing 'modemst2'...

OKAY [ 0.062s]

finished. total time: 0.062s

C:\adb>fastboot flash fsg fsg.mbn

target reported max download size of 536870912 bytes

sending 'fsg' (1864 KB)...

OKAY [ 0.100s]

writing 'fsg'...

OKAY [ 0.109s]

finished. total time: 0.210s

C:\adb>fastboot erase cache

erasing 'cache'...

OKAY [ 0.016s]

finished. total time: 0.031s

C:\adb>fastboot erase userdata

erasing 'userdata'...

OKAY [ 0.078s]

finished. total time: 0.078s

C:\adb>fastboot erase customize

erasing 'customize'...

OKAY [ 0.031s]

finished. total time: 0.031s

C:\adb>fastboot erase clogo

erasing 'clogo'...

OKAY [ 0.047s]

finished. total time: 0.047s

C:\adb>fastboot oem fb_mode_clear

...

OKAY [ -0.000s]

finished. total time: -0.000s

C:\adb>fastboot reboot

rebooting...

i tried flashing stock rom from aospa. The rom got successfuly flashed . The i set up the phone and looked for software updates. I had the decemeber 2016 security patch on the stock rom. So i updated it . The boot requested me to reboot . After installing the update my phone is bricked.

I saw some guide to flash blankflash to start the fastboot mode. This worked, but i cant flash the bootloader cause it got oem locked. I get error in adb "remote execution failed". Can anyone help