How to re-lock bootlader

[bionemesis]

Just wanted to make a complete post of how I just did this, as it combines information from 3 different posts.

Step 1: Download the latest factory image and extract the ZIP file to a folder of your choice.
Step 2: Boot the phone into fastboot mode and run the following against the files extracted from the ZIP file:

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 system system.img_sparsechunk.8
fastboot flash system system.img_sparsechunk.9
fastboot flash system system.img_sparsechunk.10
fastboot flash system system.img_sparsechunk.11
fastboot flash system system.img_sparsechunk.12
fastboot flash system system.img_sparsechunk.13
fastboot flash system system.img_sparsechunk.14
fastboot flash system system.img_sparsechunk.15
fastboot flash system system.img_sparsechunk.16
fastboot flash system system.img_sparsechunk.17
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 reboot

Please note that the second last one (fastboot erase clogo) will likely fail.

Step 3: Boot into your phone and walk through the wizard just enough to get to the home screen. Don't bother signing in with your account, just skip everything.
Step 4: Boot your phone into fastboot mode again.
Step 5: Run the following:

fastboot flash boot boot.img
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 system system.img_sparsechunk.8
fastboot flash system system.img_sparsechunk.9
fastboot flash system system.img_sparsechunk.10
fastboot flash system system.img_sparsechunk.11
fastboot flash system system.img_sparsechunk.12
fastboot flash system system.img_sparsechunk.13
fastboot flash system system.img_sparsechunk.14
fastboot flash system system.img_sparsechunk.15
fastboot flash system system.img_sparsechunk.16
fastboot flash system system.img_sparsechunk.17
fastboot oem lock

And that's it! Your phone will automatically reboot after the last command a re-locked bootloader awaits.

 

[Stuttgarter1234]

it works for me too. oem locked, but software status modified?

 

[Shaggart]

link is briken, can someone restore it pls

 

[Spaniard89]

Just wanted to make a complete post of how I just did this, as it combines information from 3 different posts.

Step 1: Download the latest factory image and extract the ZIP file to a folder of your choice.
Step 2: Boot the phone into fastboot mode and run the following against the files extracted from the ZIP file:

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 system system.img_sparsechunk.8
fastboot flash system system.img_sparsechunk.9
fastboot flash system system.img_sparsechunk.10
fastboot flash system system.img_sparsechunk.11
fastboot flash system system.img_sparsechunk.12
fastboot flash system system.img_sparsechunk.13
fastboot flash system system.img_sparsechunk.14
fastboot flash system system.img_sparsechunk.15
fastboot flash system system.img_sparsechunk.16
fastboot flash system system.img_sparsechunk.17
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 reboot

Please note that the second last one (fastboot erase clogo) will likely fail.

Step 3: Boot into your phone and walk through the wizard just enough to get to the home screen. Don't bother signing in with your account, just skip everything.
Step 4: Boot your phone into fastboot mode again.
Step 5: Run the following:

fastboot flash boot boot.img
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 system system.img_sparsechunk.8
fastboot flash system system.img_sparsechunk.9
fastboot flash system system.img_sparsechunk.10
fastboot flash system system.img_sparsechunk.11
fastboot flash system system.img_sparsechunk.12
fastboot flash system system.img_sparsechunk.13
fastboot flash system system.img_sparsechunk.14
fastboot flash system system.img_sparsechunk.15
fastboot flash system system.img_sparsechunk.16
fastboot flash system system.img_sparsechunk.17
fastboot oem lock

And that's it! Your phone will automatically reboot after the last command a re-locked bootloader awaits.

In the step 5, following has to be executed first:

fastboot oem lock begin
fastboot oem lock begin

 

[jmc86]

In the step 5, following has to be executed first:

fastboot oem lock begin
fastboot oem lock begin

just tried this and was stuck with "still require signed boot.img" until after step 3 I turned on developer options and usb debugging on. I was then able to lock bootloader.

 

[TobiPeter]

In the step 5, following has to be executed first:

fastboot oem lock begin
fastboot oem lock begin

worked for me!

Thanks!

 

[mwillian]

Works on XT1650-03 retbr?
The unlocked bootloader message go away?

 

[Marke2566]

Hello, I need the link for download the GRIFFIN_NPLS26.118-20-5-8_cid50_subsidy-DEFAULT_regulatory-DEFAULT_CFC.xml.zip from android host.
thanks

 

[Marke2566]

In the step 5, following has to be executed first:

fastboot oem lock begin
fastboot oem lock begin

worked for me!

I also add this code:

fastboot oem fb_mode_clear

for return to normal boot.

 

[edzilla]

Just wanted to make a complete post of how I just did this, as it combines information from 3 different posts.

Step 1: Download the latest factory image and extract the ZIP file to a folder of your choice.
Step 2: Boot the phone into fastboot mode and run the following against the files extracted from the ZIP file:

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 system system.img_sparsechunk.8
fastboot flash system system.img_sparsechunk.9
fastboot flash system system.img_sparsechunk.10
fastboot flash system system.img_sparsechunk.11
fastboot flash system system.img_sparsechunk.12
fastboot flash system system.img_sparsechunk.13
fastboot flash system system.img_sparsechunk.14
fastboot flash system system.img_sparsechunk.15
fastboot flash system system.img_sparsechunk.16
fastboot flash system system.img_sparsechunk.17
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 reboot

Please note that the second last one (fastboot erase clogo) will likely fail.

Step 3: Boot into your phone and walk through the wizard just enough to get to the home screen. Don't bother signing in with your account, just skip everything.
Step 4: Boot your phone into fastboot mode again.
Step 5: Run the following:

fastboot flash boot boot.img
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 system system.img_sparsechunk.8
fastboot flash system system.img_sparsechunk.9
fastboot flash system system.img_sparsechunk.10
fastboot flash system system.img_sparsechunk.11
fastboot flash system system.img_sparsechunk.12
fastboot flash system system.img_sparsechunk.13
fastboot flash system system.img_sparsechunk.14
fastboot flash system system.img_sparsechunk.15
fastboot flash system system.img_sparsechunk.16
fastboot flash system system.img_sparsechunk.17
fastboot oem lock

And that's it! Your phone will automatically reboot after the last command a re-locked bootloader awaits.

I agree with the other posters here.
I had to:
at the end of step 3:
go to developers options and turn on USB debugging.
Before step 5:

fastboot oem lock begin
fastboot oem lock begin

After that phone is back to locked

 

[knjigo]

I get error at the first line (flashing gpt.bin)

"Preflash validation failed"
"Security downgrade"

I get this with the latest firmware that I found.
Should I just ignore this message and keep going?

 

[Loader009]

Always skip gpt and bootloader flashing. It won't work.

 

[knjigo]

Always skip gpt and bootloader flashing. It won't work.

Yes i skipped these.

Tried to flash this one XT1650-03_GRIFFIN_RETEU-EMEA_MPL24.246-17_cid50_subsidy-DEFAULT_regulatory-03_CFC_EMEA.xml

i get error at boot.img also (not signed or corrupt)

As result, i have bootloop.

It stuck at warning about unlocked bootloader, and thats all. It started again.

---------- Post added at 04:21 PM ---------- Previous post was at 03:55 PM ----------

I flashed retbr image with no problem.
Started the phone. Worked everything fine.
then i started the last step with

fastboot oem lock begin (twice)
after that i get error on everything i tried to flash

like this:

(bootloader) Security version downgrade
(bootloader) Image boot failed validation
(bootloader) Preflash validation failed
FAILED (remote failure)

 

[Loader009]

If you had once stock Nougat on the Moto Z, you can't flash Marshmallow. (MPL indicates a Marshmallow ROM)

Look for a Nougat ROM, you can also flash RETBR on RETEU devices (did this already).

edit: Dunno on your current problem, never relocked the bootloader.

 

[m0ritz]

Okay since my build number is: NPLS26.118-20-5-3 I downloaded "XT1650-03_GRIFFIN_RETAIL_7.1.1_NPLS26.118-20-5-3_cid50_subsidy-DEFAULT_regulatory-DEFAULT_CFC.xml.zip" ... I followed the flash instructions on here but
fastboot flash partition gpt.bin
fastboot flash bootloader bootloader.img

will not work I always get an error message:

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash partition gpt.bin
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slotartition: not found
target reported max download size of 536870912 bytes
sending 'partition' (142 KB)...
OKAY [ 0.007s]
writing 'partition'...
(bootloader) Validating 'gpt.default.xml'
(bootloader) Security version downgrade
(bootloader) Image primary_gpt failed validation
(bootloader) Preflash validation failed
(bootloader) Security version downgrade
(bootloader) Image primary_gpt failed validation
(bootloader) Preflash validation failed
(bootloader) Security version downgrade
(bootloader) Image primary_gpt failed validation
(bootloader) Preflash validation failed
(bootloader) Security version downgrade
(bootloader) Image primary_gpt failed validation
(bootloader) Preflash validation failed
(bootloader) Cancelling 'gpt.default.xml'
FAILED (remote failure)
finished. total time: 0.190s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash bootloader bootloader.img
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:bootloader: not found
target reported max download size of 536870912 bytes
sending 'bootloader' (7792 KB)...
OKAY [ 0.236s]
writing 'bootloader'...
(bootloader) Validating 'bootloader.default.xml'
(bootloader) Security version downgrade
(bootloader) Image aboot failed validation
(bootloader) Preflash validation failed
(bootloader) Security version downgrade
(bootloader) Image pmic failed validation
(bootloader) Preflash validation failed
(bootloader) Cancelling 'bootloader.default.xml'
FAILED (remote failure)
finished. total time: 0.520s

and nothing works ... The phone will normaly start - bootloader still unlocked.

And since that does not work, anything after
fastboot oem lock begin
fastboot oem lock begin
does not work either.

 

[knjigo]

I have the same problem. I think I'm never gonna be able to return to stock.

 

[RedLink1155]

You could try turning oem unlocking off in developer options, I'm not sure if it will re lock your bootloader but it's worth a shot.

 

[m0ritz]

You could try turning oem unlocking off in developer options, I'm not sure if it will re lock your bootloader but it's worth a shot.

That's a cute idea but the option is grayed out, you can't even click on it.

 

[angourakis]

It means you had an updated version on your phone and now you're trying to restore an older version.
I advise you to wait until an updated version is available or you risk bricking your device.

PS: Now that I read your version, you may try with this one: https://rsdsecure-cloud.motorola.co...ubsidy-DEFAULT_regulatory-DEFAULT_CFC.xml.zip
It's the November patch

Okay since my build number is: NPLS26.118-20-5-3 I downloaded "XT1650-03_GRIFFIN_RETAIL_7.1.1_NPLS26.118-20-5-3_cid50_subsidy-DEFAULT_regulatory-DEFAULT_CFC.xml.zip" ... I followed the flash instructions on here but
fastboot flash partition gpt.bin
fastboot flash bootloader bootloader.img

will not work I always get an error message:



and nothing works ... The phone will normaly start - bootloader still unlocked.

And since that does not work, anything after
fastboot oem lock begin
fastboot oem lock begin
does not work either.

 

[m0ritz]

It means you had an updated version on your phone and now you're trying to restore an older version.
I advise you to wait until an updated version is available or you risk bricking your device.

PS: Now that I read your version, you may try with this one: https://rsdsecure-cloud.motorola.co...ubsidy-DEFAULT_regulatory-DEFAULT_CFC.xml.zip
It's the November patch

Thank you for the idea, I tired that version before but sadly I have since updated to the newest security patch so no luck for me.
Could you inform me when a new version is uploaded if you have time for it?