Trying everything to re-lock xt1625 G4

[hyperblau]

xt1625
Unlocked bootloader.
TWRP 3.1.1-0 currently while I troubleshoot.

I need to get this device back to stock, unrooted, bootloader locked. I am aware the warranty is gone.

I have tried flashing like 3 different versions of the stock firmware. I can flash the ROM no issue, but it WILL NOT LOCK the bootloader no matter what I do. All of the guides I've found involve this:

fastboot oem lock begin
fastboot flash partition gpt.bin
fastboot flash bootloader bootloader.img
fastboot flash logo logo.bin
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash dsp adspso.bin
fastboot flash oem oem.img
fastboot flash system system.img_sparsechunk.0
fastboot flash system system.img_sparsechunk.1
fastboot flash system system.img_sparsechunk.2
fastboot flash system system.img_sparsechunk.3
fastboot flash system system.img_sparsechunk.4
fastboot flash system system.img_sparsechunk.5
fastboot flash system system.img_sparsechunk.6
fastboot flash system system.img_sparsechunk.7
fastboot flash modem NON-HLOS.bin
fastboot erase modemst1
fastboot erase modemst2
fastboot flash fsg fsg.mbn
fastboot erase cache
fastboot erase userdata
fastboot erase customize
fastboot erase clogo
fastboot oem lock
fastboot reboot

business, and it just does not work to lock the bootloader for me. I still get the "a signed boot.img is required" error, even after flashing a stock presumably signed boot.img 20 seconds prior. If I don't flash to Lineage in between tries, it won't even let me reflash boot.img or system etc because it'd be a "Security downgrade".

Is there a bullet-proof way to just bomb this thing from orbit with a stock 6.X image so that it locks the bootloader?

 

[Rempala]

I did mine a few weeks ago. If you are on nugget here is the stock image for 1625
https://drive.google.com/file/d/0Bx6eXSiwEdFFWXZyYjB5S0xlZWs/view

 

[hyperblau]

I did mine a few weeks ago. If you are on nugget here is the stock image for 1625
https://drive.google.com/file/d/0Bx6eXSiwEdFFWXZyYjB5S0xlZWs/view

Do you mean that you were able to flash and re-lock?

I just used the firmware you provided, no luck though. Still getting the "Still require signed boot.img" error when it tried to finish up the oem lock. And it appears it doesn't actually flash correctly either, version is still 6.0.1. Not sure what I'm doing wrong here.

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot oem lock begin
...
(bootloader) WARNING: This command erases all user data.
(bootloader) Please re-run this command to continue.
OKAY [  0.005s]
finished. total time: 0.006s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot oem lock begin
...
(bootloader) Flash valid Android images now
(bootloader) Then re-run this command to lock
OKAY [  0.012s]
finished. total time: 0.012s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot flash partition gpt.bin
target reported max download size of 536870912 bytes
sending 'partition' (32 KB)...
OKAY [  0.005s]
writing 'partition'...
(bootloader) Security version downgrade

(bootloader) Image primary_gpt failed validation

(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 0.044s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot flash bootloader bootloader.img
target reported max download size of 536870912 bytes
sending 'bootloader' (3651 KB)...
OKAY [  0.119s]
writing 'bootloader'...
(bootloader) validating: bootloader.default.xml ...
(bootloader) will pass: flash:aboot
(bootloader) will pass: flash:rpm
(bootloader) will pass: flash:tz
(bootloader) will pass: flash:hyp
(bootloader) will pass: flash:cmnlib
(bootloader) will pass: flash:keymaster
(bootloader) will pass: flash:sbl1
(bootloader) committing: bootloader.default.xml ...
(bootloader) - flashing 'emmc_appsboot.mbn' to 'aboot'
(bootloader) - flashing 'rpm.mbn' to 'rpm'
(bootloader) - flashing 'tz.mbn' to 'tz'
(bootloader) - flashing 'hyp.mbn' to 'hyp'
(bootloader) - flashing 'cmnlib.mbn' to 'cmnlib'
(bootloader) - flashing 'keymaster.mbn' to 'keymaster'
(bootloader) - flashing 'sbl1.mbn' to 'sbl1'
OKAY [  0.394s]
finished. total time: 0.514s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot flash logo logo.bin
target reported max download size of 536870912 bytes
sending 'logo' (2105 KB)...
OKAY [  0.069s]
writing 'logo'...
OKAY [  0.070s]
finished. total time: 0.141s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot flash boot boot.img
target reported max download size of 536870912 bytes
sending 'boot' (16384 KB)...
OKAY [  0.519s]
writing 'boot'...
(bootloader) Security version downgrade

(bootloader) Image boot failed validation

(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 0.686s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot flash recovery recovery.img
target reported max download size of 536870912 bytes
sending 'recovery' (16484 KB)...
OKAY [  0.523s]
writing 'recovery'...
(bootloader) Security version downgrade

(bootloader) Image recovery failed validation

(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 0.691s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot flash dsp adspso.bin
target reported max download size of 536870912 bytes
sending 'dsp' (16384 KB)...
OKAY [  0.518s]
writing 'dsp'...
OKAY [  0.298s]
finished. total time: 0.818s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot flash oem oem.img
target reported max download size of 536870912 bytes
sending 'oem' (96490 KB)...
OKAY [  3.039s]
writing 'oem'...
(bootloader) Security version downgrade

(bootloader) Image o failed validation

(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 3.099s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot flash system system.img_sparsechunk.0
target reported max download size of 536870912 bytes
sending 'system' (261001 KB)...
OKAY [  8.213s]
writing 'system'...
(bootloader) Security version downgrade

(bootloader) Image s failed validation

(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 8.278s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot flash system system.img_sparsechunk.1
target reported max download size of 536870912 bytes
sending 'system' (250858 KB)...
OKAY [  7.893s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 7.921s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot flash system system.img_sparsechunk.2
target reported max download size of 536870912 bytes
sending 'system' (254625 KB)...
OKAY [  8.012s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 8.040s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot flash system system.img_sparsechunk.3
target reported max download size of 536870912 bytes
sending 'system' (261577 KB)...
OKAY [  8.231s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 8.249s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot flash system system.img_sparsechunk.4
target reported max download size of 536870912 bytes
sending 'system' (260443 KB)...
OKAY [  8.194s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 8.230s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot flash system system.img_sparsechunk.5
target reported max download size of 536870912 bytes
sending 'system' (248842 KB)...
OKAY [  7.830s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 7.855s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot flash system system.img_sparsechunk.6
target reported max download size of 536870912 bytes
sending 'system' (259549 KB)...
OKAY [  8.167s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 8.209s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot flash system system.img_sparsechunk.7
target reported max download size of 536870912 bytes
sending 'system' (82497 KB)...
OKAY [  2.599s]
writing 'system'...
(bootloader) Invalid signed image
(bootloader) Preflash validation failed
FAILED (remote failure)
finished. total time: 2.616s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot flash modem NON-HLOS.bin
target reported max download size of 536870912 bytes
sending 'modem' (76954 KB)...
OKAY [  2.424s]
writing 'modem'...
OKAY [  1.073s]
finished. total time: 3.499s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot erase modemst1
erasing 'modemst1'...
OKAY [  0.022s]
finished. total time: 0.023s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot erase modemst2
erasing 'modemst2'...
OKAY [  0.032s]
finished. total time: 0.033s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot flash fsg fsg.mbn
target reported max download size of 536870912 bytes
sending 'fsg' (2040 KB)...
OKAY [  0.067s]
writing 'fsg'...
OKAY [  0.058s]
finished. total time: 0.128s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot erase cache
erasing 'cache'...
OKAY [  0.016s]
finished. total time: 0.017s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot erase userdata
erasing 'userdata'...
OKAY [  0.031s]
finished. total time: 0.032s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot erase customize
erasing 'customize'...
OKAY [  0.015s]
finished. total time: 0.016s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot erase clogo
erasing 'clogo'...
OKAY [  0.015s]
finished. total time: 0.016s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot oem lock
...
(bootloader) Still require signed boot.img
OKAY [  0.004s]
finished. total time: 0.005s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>fastboot oem lock
...
(bootloader) Still require signed boot.img
OKAY [  0.004s]
finished. total time: 0.005s

F:\apps\AndroidTools\Moto G4 Plus XT1640-43 ATHENE NPJ25.93-14 Stock Img>

 

[Rempala]

I think I gave u the wrong address. Here is the one I used, I just uploaded it to make sure. Yes I used it to relock the bootloader.
ATHENE_NPJS25.93-14-4_cid50_subsidy-DEFAULT_regulatory-DEFAULT_CFC.xml.zip

 

[hyperblau]

I'm not sure why that firmware worked differently than all the others I tried, but thanks! It did work, bootloader is once again locked. Appreciate the help.

 

[Rempala]

I'm not sure why that firmware worked differently than all the others I tried, but thanks! It did work, bootloader is once again locked. Appreciate the help.

Because its the lastest release. (NPJS25.93-14-4)