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AC2133
Fanfold Paper
Posts: 11
Registered: ‎12-27-2016
Location: CA
Views: 18,383
Message 1 of 4

Moto Z re-flash failed, (bootloader) Image boot failed validation. (bootloader) Preflash validation.

After get Moto bootloader unlocked, I started to re-flash the image. Then after flashed boot.img, I got "(bootloader) Image boot failed validation
(bootloader) Preflash validation failed

FAILED (remote failure)

 

I realized the flashing is wrong. then I press the Power Button on the phone, I got following error message:

 

Start up Failed:

 

Your device didn't startup successfully. Use the Software Repair Assisstant on computer to repair your device.

 

Connect your device to yoour computer to get the Softwre Repair Assisstant.

 

AP Fastboot Flash Mode (Secure)

Cmd:  flash: logo

Cmd: getvar: slot-count

Cmd: getvar: slot-suffixes

Cmd: getvar: slot_suffixes

Cmd: getvat: has-slot: boot

Cmd: getvar: partition-type: boot

Cmd: getvar: max-download-size

Cmd: download: 02000000

Cmd: flash: boot

 

Failed to verify hab image boot

Failed to verify hab image boot

Failed to validate boot image

ERROR: Failed to pass validation.

        backup to fastboot

Boot up failed

 

Phone is Moto Z XT1650-05

 

What is the Software Repair Assisstant?

What I can do then?

 

Thanks in advamce.

Highlighted
AC2133
Fanfold Paper
Posts: 11
Registered: ‎12-27-2016
Location: CA
Views: 18,382
Message 2 of 4

Re: Moto Z re-flash failed, (bootloader) Image boot failed validation. (bootloader) Preflash validat

Here is the steps:

 

>fastboot oem lock begin
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
...
(bootloader) WARNING: This command erases all user data.
(bootloader) Please re-run this command to continue.
OKAY [ -0.000s]
finished. total time: 0.016s

 

>fastboot oem lock begin
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
...
(bootloader) Flash valid Android images now
(bootloader) Then re-run this command to lock
OKAY [  0.016s]
finished. total time: 0.016s

>fastboot flash logo logo.bin
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:logo: not found
target reported max download size of 536870912 bytes
sending 'logo' (2933 KB)...
OKAY [  0.078s]
writing 'logo'...
OKAY [  0.530s]
finished. total time: 0.608s

>fastboot flash boot boot.img
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:boot: not found
target reported max download size of 536870912 bytes
sending 'boot' (32768 KB)...
OKAY [  0.764s]
writing 'boot'...
(bootloader) Image boot failed validation
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 1.279s

AC2133
Fanfold Paper
Posts: 11
Registered: ‎12-27-2016
Location: CA
Views: 18,376
Message 3 of 4

Re: Moto Z re-flash failed, (bootloader) Image boot failed validation. (bootloader) Preflash validat

In flash boot.img:

(bootloader) Image boot failed validation
(bootloader) Preflash validation failed
FAILED (remote failure)

 

what does the message mean? how to fix it?

 

Thanks

Senior MotoAgent
Senior MotoAgent
Posts: 5,397
Registered: ‎07-12-2014
Location: US
Views: 18,363
Message 4 of 4

Re: Moto Z re-flash failed, (bootloader) Image boot failed validation. (bootloader) Preflash validat


Hi AC2133,

 

This community are for stock phones. Discussions of unlocked bootloaders and flashing are not allowed. We have a separate community for bootloader issues. You can check this link: https://forums.lenovo.com/t5/MOTOROLA-Android-Developer/Bootloader-Unlock-Problems/td-p/3222809

 

Locking thread.

 

 

Regards,

JM

Motorola Support