Database Users

[Help] [Custom Rom] How to revert back to stock rom

Hello Moderators,
My Device Model : XT 1644 64 GB variant
Current Rom: Lineage OS
Bootloader Status: Unlocked
Since the US variant didn't get the nougat update, I decided to unlock my bootloader and switch to a CM based ROM.Though I love it I've been facing a lot of issues in fingerprint sensor and advanced settings
Now I'd like to go back to my stock ROM and I've few doubts
1. If I don't lock my bootloader again after switching to stock ROM will I be still eligible to receive the official updates?
2. This link to stock ROM https://forum.xda-developers.com/moto-g4-plus/how-to/moto-g4-plus-xt1643-updated-signed-t3460695 says that it's for the Indian version will it work on the US versions?
3. After flashing the stock ROM will it be okay if I follow this thread and update to nougat https://forum.xda-developers.com/moto-g4-plus/how-to/xt1643-ota-nougat-t3483943?
4.Does the soak test have any bugs?
5.If I'm on the soak test and Once the official nougat is available for my device what should I do?
I have a twrp backup of my stock ROM too
Click to expand...
Click to collapse
@rahulsnair @1chrome
Thanks for taking your time to help me out !!! I'd surely love to return the favour someday

Vijay Selvaraju said:
Hello Moderators,
My Device Model : XT 1644 64 GB variant
Current Rom: Lineage OS
Bootloader Status: Unlocked
Since the US variant didn't get the nougat update, I decided to unlock my bootloader and switch to a CM based ROM.Though I love it I've been facing a lot of issues in fingerprint sensor and advanced settings
Now I'd like to go back to my stock ROM and I've few doubts
1. If I don't lock my bootloader again after switching to stock ROM will I be still eligible to receive the official updates?
2. This link to stock ROM https://forum.xda-developers.com/moto-g4-plus/how-to/moto-g4-plus-xt1643-updated-signed-t3460695 says that it's for the Indian version will it work on the US versions?
3. After flashing the stock ROM will it be okay if I follow this thread and update to nougat https://forum.xda-developers.com/moto-g4-plus/how-to/xt1643-ota-nougat-t3483943?
4.Does the soak test have any bugs?
5.If I'm on the soak test and Once the official nougat is available for my device what should I do?
@rahulsnair @1chrome
Thanks for taking your time to help me out !!! I'd surely love to return the favour someday
Click to expand...
Click to collapse
1) Yes - you should still be eligible for stock OTA updates even with an unlocked bootloader - as far as I understand, the main thing the OTA checks is whether your recovery and kernel/system are stock and unmodified.
2) I didn't see any reports of that XT1643 update working for XT1644 devices - try this thread https://forum.xda-developers.com/moto-g4-plus/how-to/xt1644-firmware-t3454980 Looks like a few reports suggest the .48 firmware works.
3) If I recall, US firmwares don't have the right build versions for that Nougat soak (think US is ending in .48 or .64/65?), so that file may not work. Also, the soak tests available lead to a broken upgrade path - besides the 75.2 soak test, as I understand there are no other soak test updates available to bring you back onto the OTA update, meaning you'd have to flash another Nougat firmware.
If you still desire Nougat, perhaps try flashing the 93-11 (v7.0, Nov 2016 security update) or 93-14 (v7.0, Dec 2016 security update) stock ROMs; they are not the soak tests, rather they appear to be the full Nougat stock ROM. The 93-11 update also appears to be signed by Motorola (though not released by them through official channels) and possibly is the same for 93-14. Still, if you're interested: https://forum.xda-developers.com/moto-g4-plus/how-to/android-7-0-install-nougat-official-t3531612 for the 93-11 and https://forum.xda-developers.com/moto-g4-plus/how-to/moto-g4-plus-xt1640-43-athene-npj25-93-t3549369 for 93-14. Also, if you flash these, you may omit 2) since you'll directly flash to Nougat.
4)Nougat 7.0 seems to be a mixed bag for many - though the OS appears to work well for some, others have mentioned lag, battery drain/heating issues with Nougat as well as some interface issues. Your experience may vary.
5) If you wish to move back to the official OTA channel updates once you've updated to Nougat, you may be lucky in that once Motorola releases the Nougat OTA, the released build may be 93-14, so any subsequent OTAs should flash okay (provided 1) is still applicable), since your installed build matches what the OTA expects for future updates.
If you wish to downgrade and then install the official OTA to ensure you have a verified firmware from Motorola, you may wish to downgrade to MM, then update via OTA. A guide like this may help (https://forum.xda-developers.com/moto-g4-plus/how-to/guide-downgrade-to-marshmallow-nougat-t3515961) but ensure you do not downgrade your gpt or bootloader partitions else you risk damaging your phone - just omit those commands flashing either of those partitions. Someone correct me if I'm wrong, I think it's these commands you omit when downgrading:
fastboot flash partition gpt.bin
fastboot flash bootloader bootloader.img
Good luck either way

echo92 said:
1) Yes - you should still be eligible for stock OTA updates even with an unlocked bootloader - as far as I understand, the main thing the OTA checks is whether your recovery and kernel/system are stock and unmodified.
2) I didn't see any reports of that XT1643 update working for XT1644 devices - try this thread https://forum.xda-developers.com/moto-g4-plus/how-to/xt1644-firmware-t3454980 Looks like a few reports suggest the .48 firmware works.
3) If I recall, US firmwares don't have the right build versions for that Nougat soak (think US is ending in .48 or .64/65?), so that file may not work. Also, the soak tests available lead to a broken upgrade path - besides the 75.2 soak test, as I understand there are no other soak test updates available to bring you back onto the OTA update, meaning you'd have to flash another Nougat firmware.
If you still desire Nougat, perhaps try flashing the 93-11 (v7.0, Nov 2016 security update) or 93-14 (v7.0, Dec 2016 security update) stock ROMs; they are not the soak tests, rather they appear to be the full Nougat stock ROM. The 93-11 update also appears to be signed by Motorola (though not released by them through official channels) and possibly is the same for 93-14. Still, if you're interested: https://forum.xda-developers.com/moto-g4-plus/how-to/android-7-0-install-nougat-official-t3531612 for the 93-11 and https://forum.xda-developers.com/moto-g4-plus/how-to/moto-g4-plus-xt1640-43-athene-npj25-93-t3549369 for 93-14. Also, if you flash these, you may omit 2) since you'll directly flash to Nougat.
4)Nougat 7.0 seems to be a mixed bag for many - though the OS appears to work well for some, others have mentioned lag, battery drain/heating issues with Nougat as well as some interface issues. Your experience may vary.
5) If you wish to move back to the official OTA channel updates once you've updated to Nougat, you may be lucky in that once Motorola releases the Nougat OTA, the released build may be 93-14, so any subsequent OTAs should flash okay (provided 1) is still applicable), since your installed build matches what the OTA expects for future updates.
If you wish to downgrade and then install the official OTA to ensure you have a verified firmware from Motorola, you may wish to downgrade to MM, then update via OTA. A guide like this may help (https://forum.xda-developers.com/moto-g4-plus/how-to/guide-downgrade-to-marshmallow-nougat-t3515961) but ensure you do not downgrade your gpt or bootloader partitions else you risk damaging your phone - just omit those commands flashing either of those partitions. Someone correct me if I'm wrong, I think it's these commands you omit when downgrading:
fastboot flash partition gpt.bin
fastboot flash bootloader bootloader.img
Good luck either way
Click to expand...
Click to collapse
Thanks a lot bro @echo92
I actully followed https://forum.xda-developers.com/moto-g4-plus/how-to/moto-g4-plus-xt1640-43-athene-npj25-93-t3549369 these steps now I'm running on stock nougat
Just omitted the bootloader unlock part since you told me that I'll be receiving updates even if the bootloader is unlocked

echo92 said:
1) Yes - you should still be eligible for stock OTA updates even with an unlocked bootloader - as far as I understand, the main thing the OTA checks is whether your recovery and kernel/system are stock and unmodified.
2) I didn't see any reports of that XT1643 update working for XT1644 devices - try this thread https://forum.xda-developers.com/moto-g4-plus/how-to/xt1644-firmware-t3454980 Looks like a few reports suggest the .48 firmware works.
3) If I recall, US firmwares don't have the right build versions for that Nougat soak (think US is ending in .48 or .64/65?), so that file may not work. Also, the soak tests available lead to a broken upgrade path - besides the 75.2 soak test, as I understand there are no other soak test updates available to bring you back onto the OTA update, meaning you'd have to flash another Nougat firmware.
If you still desire Nougat, perhaps try flashing the 93-11 (v7.0, Nov 2016 security update) or 93-14 (v7.0, Dec 2016 security update) stock ROMs; they are not the soak tests, rather they appear to be the full Nougat stock ROM. The 93-11 update also appears to be signed by Motorola (though not released by them through official channels) and possibly is the same for 93-14. Still, if you're interested: https://forum.xda-developers.com/moto-g4-plus/how-to/android-7-0-install-nougat-official-t3531612 for the 93-11 and https://forum.xda-developers.com/moto-g4-plus/how-to/moto-g4-plus-xt1640-43-athene-npj25-93-t3549369 for 93-14. Also, if you flash these, you may omit 2) since you'll directly flash to Nougat.
4)Nougat 7.0 seems to be a mixed bag for many - though the OS appears to work well for some, others have mentioned lag, battery drain/heating issues with Nougat as well as some interface issues. Your experience may vary.
5) If you wish to move back to the official OTA channel updates once you've updated to Nougat, you may be lucky in that once Motorola releases the Nougat OTA, the released build may be 93-14, so any subsequent OTAs should flash okay (provided 1) is still applicable), since your installed build matches what the OTA expects for future updates.
If you wish to downgrade and then install the official OTA to ensure you have a verified firmware from Motorola, you may wish to downgrade to MM, then update via OTA. A guide like this may help (https://forum.xda-developers.com/moto-g4-plus/how-to/guide-downgrade-to-marshmallow-nougat-t3515961) but ensure you do not downgrade your gpt or bootloader partitions else you risk damaging your phone - just omit those commands flashing either of those partitions. Someone correct me if I'm wrong, I think it's these commands you omit when downgrading:
fastboot flash partition gpt.bin
fastboot flash bootloader bootloader.img
Good luck either way
Click to expand...
Click to collapse
Thanks a lot bro @echo92
I actully followed https://forum.xda-developers.com/moto-g4-plus/how-to/moto-g4-plus-xt1640-43-athene-npj25-93-t3549369 these steps now I'm running on stock nougat
Just omitted the bootloader unlock part since you told me that I'll be receiving updates even if the bootloader is unlocked

HELP, Can I downgrade to Stock Marshmallow and Upgrade to Nougat?

Hello,
Can I downgrade completly with the bootloader on Marshmallow and then upgrade to Nougat?
I want to lock my bootloader.
My G2 bricked after doing this. But I don't know if this would happen to my G4 Plus again

inFiniTyz_Z said:
Hello,
Can I downgrade completly with the bootloader on Marshmallow and then upgrade to Nougat?
I want to lock my bootloader.
My G2 bricked after doing this. But I don't know if this would happen to my G4 Plus again
Click to expand...
Click to collapse
If you wish to simply re-lock your bootloader, the easiest thing is to flash this fastboot stock ROM (which is Nougat) and use the locking script as directed in the first post. https://forum.xda-developers.com/moto-g4-plus/how-to/moto-g4-plus-xt1640-43-athene-npj25-93-t3549369 Of course, this may wipe your data - so back up, and the relocking may or may not work, in which case you may have to wait for a more up to date fastboot stock ROM to become available.
If you were to downgrade to Marshmallow, you cannot downgrade your bootloader and GPT partitions, at best, your existing bootloader would try to prevent you from downgrading those partitions. At worst, you'll brick your device again if you were to flash those - though we've got possible ways of fixing that, it's not a route I'd want to go down. Flashing the rest of Marshmallow is no problem, however, ensure you have the correct MM firmware for your device and territory.

Will this version work for my country(Germany) without OTA trouble?

inFiniTyz_Z said:
Will this version work for my country(Germany) without OTA trouble?
Click to expand...
Click to collapse
Should be okay to flash - the 93-14 build appears to be the global build that was deployed by Motorola, and should be eligible for the 93-14.4 (March 2017 security update) whenever that arrives in the EU/UK I've flashed the stock ROM onto my XT1642 several times without issue.

echo92 said:
Should be okay to flash - the 93-14 build appears to be the global build that was deployed by Motorola, and should be eligible for the 93-14.4 (March 2017 security update) whenever that arrives in the EU/UK I've flashed the stock ROM onto my XT1642 several times without issue.
Click to expand...
Click to collapse
THANK YOU IT WORKED AND THE WARNING DISAPPEARED. I am on Nougat, locked and its working like a charm
I WOULD KISS YOUR BUTT IF ITS HAVE TO BE

NPNS version to NPN version

I am having xt1686 indian variant .. i unlocked the bootloader and installed the custom roms.. now while going back to stock i mistakenly installed NPNS (US VARIANT, I suppose) ..
I am unable to install the NPN version now .. i guess the bootloader is not matching ..
Right now i am having a bootloader - C0.8(*) in NPNS ...
PLEAAE SUGGEST HOW TO MOVE TO INDIAN VERSION OF NPN... THNKS..

S does not mean US or any other variant specific build... there are literally different builds for different variants. My US Retail version is NPN25.173-83
In previous Moto models, the S meant it had been upgraded from an OTA, but in looking in my current device it has received several OTAs and does not have the S, so either that has been depreciated or our original assumptions in earlier models was incorrect.
Either way, the fact the S is there does not mean US (or any other country), just a slightly different build... I don't have an answer of why you can't go back though.
https://forum.xda-developers.com/g5-plus/help/npns-nps-firmware-t3677576

Fastboot NPN25.137-15 build (may be found as brasil-latam)
Lock bootloader (necessary to receive ota) google it
Reboot device
Update phone via ota received in system
Done.
Use this link to download 137-15 build
http://www.stechguide.com/download-moto-g5-plus-stock-firmware/

abhi.a3s said:
Fastboot NPN25.137-15 build (may be found as brasil-latam)
Lock bootloader (necessary to receive ota) google it
Reboot device
Update phone via ota received in system
Done.
Use this link to download 137-15 build
http://www.stechguide.com/download-moto-g5-plus-stock-firmware/
Click to expand...
Click to collapse
Generally, OTA updates can be received with a locked or unlocked bootloader. Only requirement is to have a stock and unmodified system.
However, I personally would caution against downgrading from NPNS firmware to NPN, as you run a risk of hard bricking if you take OTA updates after you've downgraded. As acejavelin has mentioned, the NPNS firmware should reflect OTA/security updates (but seems that Motorola's naming convention is a bit inconsistent), which means your bootloader is likely updated by the firmware. If you've flashed a NPNS firmware, you'd likely be at least on the may security patch. The Indian firmware you'd need is the January patch (NPN25.137-15, as I don't think the NPN25.137-67 or 67-5 firmwares have been leaked). Thus, downgrading to an earlier firmware might give you problems if you then use OTA updates to update. We've already seen a similar situation in the Moto G5 plus unbrick thread.
Instead of reflashing the Indian stock ROM and risking a hard brick, you may wish to look into using the TWRP flashable images which only touch the system.

echo92 said:
Generally, OTA updates can be received with a locked or unlocked bootloader. Only requirement is to have a stock and unmodified system.
However, I personally would caution against downgrading from NPNS firmware to NPN, as you run a risk of hard bricking if you take OTA updates after you've downgraded. As acejavelin has mentioned, the NPNS firmware should reflect OTA/security updates (but seems that Motorola's naming convention is a bit inconsistent), which means your bootloader is likely updated by the firmware. Thus, downgrading to an earlier firmware might give you problems if you then use OTA updates to update. We've already seen a similar situation in the Moto G5 plus unbrick thread.
Instead of reflashing the Indian stock ROM and risking a hard brick, you may wish to look into using the TWRP flashable images which only touch the system.
Click to expand...
Click to collapse
I had same issue.
I unlocked my bootloader when I was on NPN25-137-67, installed custom roms as well. My bootloader got corrupted.
I tried flashing the twrp stock zip but it didn't work.
I know the risks of downgrading and it can hardbrick the device. But since I already downgraded and my fone is still alive I thought it could help him as well. So it's tested. And it did not mess up anything.
About locked/unlocked bootloader, you might be right that ota updates can be received. But since I locked my bootloader and then did the update process. twice. it worked.
Well ofcourse there are lots of ifs so I would also suggest downgrading firmware as a last resort.
P. S. I have xt1686 Indian variant.
---------- Post added at 07:37 AM ---------- Previous post was at 07:31 AM ----------
Twrp images
https://forum.xda-developers.com/g5-plus/development/rom-twrp-flashable-stock-builds-t3675616

Build 67-5
https://rsdsecure-cloud.motorola.co...ubsidy-DEFAULT_regulatory-DEFAULT_CFC.xml.zip
Credit to rickk
Use vpn if unable to download

abhi.a3s said:
I had same issue.
I unlocked my bootloader when I was on NPN25-137-67, installed custom roms as well. My bootloader got corrupted.
I tried flashing the twrp stock zip but it didn't work.
I know the risks of downgrading and it can hardbrick the device. But since I already downgraded and my fone is still alive I thought it could help him as well. So it's tested. And it did not mess up anything.
About locked/unlocked bootloader, you might be right that ota updates can be received. But since I locked my bootloader and then did the update process. twice. it worked.
Well ofcourse there are lots of ifs so I would also suggest downgrading firmware as a last resort.
P. S. I have xt1686 Indian variant.
---------- Post added at 07:37 AM ---------- Previous post was at 07:31 AM ----------
Twrp images
https://forum.xda-developers.com/g5-plus/development/rom-twrp-flashable-stock-builds-t3675616
Click to expand...
Click to collapse
Okay, when you hard bricked and then used the blankflash, then by flashing the NPN25.137-15 update, you may not have run into any issues as that was the update prior to NPN25.137-67. Thus, you may have been okay as the OTA update simply patched the same files as before. You may also have been able to downgrade without issue as the NPN25.137-67 firmware is only up to the March 2017 patch level.
The opening poster has the different problem of having NPNS25.137 firmware, which at the moment is either NPNS25.137-33-5/NPNS25.137-33-11 or NPNS25.137-35-5 (EU or US firmware) with the May 2017/August 2017 security patch. Downgrading from the May 2017 patch or later and then accepting OTA updates appears to cause a hard brick, especially if you cross downgrade from the NPNS firmware to the Indian firmware: https://forum.xda-developers.com/g5-plus/help/moto-g5-plus-hard-bricked-recognized-t3636457

echo92 said:
Okay, when you hard bricked and then used the blankflash, then by flashing the NPN25.137-15 update, you may not have run into any issues as that was the update prior to NPN25.137-67. Thus, you may have been okay as the OTA update simply patched the same files as before. You may also have been able to downgrade without issue as the NPN25.137-67 firmware is only up to the March 2017 patch level.
The opening poster has the different problem of having NPNS25.137 firmware, which at the moment is either NPNS25.137-33-5/NPNS25.137-33-11 or NPNS25.137-35-5 (EU or US firmware) with the May 2017/August 2017 security patch. Downgrading from the May 2017 patch or later and then accepting OTA updates appears to cause a hard brick, especially if you cross downgrade from the NPNS firmware to the Indian firmware: https://forum.xda-developers.com/g5-plus/help/moto-g5-plus-hard-bricked-recognized-t3636457
Click to expand...
Click to collapse
Well ofcourse there is a big potential of hard bricking the device by the method. That's why I said last resort.
So what do you suggest?
TWRP image? And if it doesn't work, he should probably wait up for next NPN build? @toyesh.patra you should consider keeping a custom rom if possible.
Btw
The ota update which I received was August patch. After which I unlocked my bootloader. It was either NPN25.137-67 or NPN25.137-67-5. I'M not sure about version. But it was definitely August patch.
Or maybe I was lucky one time.
Won't do it another time.

anuraag.neo said:
Build 67-5
https://rsdsecure-cloud.motorola.co...ubsidy-DEFAULT_regulatory-DEFAULT_CFC.xml.zip
Credit to rickk
Use vpn if unable to download
Click to expand...
Click to collapse
For 1686? Full fastboot firmware leaked?

yea, right now i m using the 67-5 build using twrp..
although i wanted to use the 67-5 with locked bootloader.. nevermind ..

psychopac said:
For 1686? Full fastboot firmware leaked?
Click to expand...
Click to collapse
Yes

So if I wanted to go full stock after flashing any custom ROM, all I need to do is flash the 67-5 firmware and I'll be good to go, right?
PS: I'm already on stock and updated to 67-5

psychopac said:
So if I wanted to go full stock after flashing any custom ROM, all I need to do is flash the 67-5 firmware and I'll be good to go, right?
PS: I'm already on stock and updated to 67-5
Click to expand...
Click to collapse
Yes

I can't download it. How Can I download? please upload googel Thanks bro

birkhoffChang said:
I can't download it. How Can I download? please upload googel Thanks bro
Click to expand...
Click to collapse
use search function before asking
https://forum.xda-developers.com/g5-plus/how-to/stock-firmware-npn25-137-67-5-fastboot-t3694738

What firmware for XT1681

Hey there !
I have a Moto G5 Plus International edition (XT1681) with firmware NPNS25.137-92-4 (latest January Patch).
I want to know what firmware to download from here (https://firmware.center/firmware/Motorola/Moto G5 Plus/Stock/) for factory flash not to get bricked like an idiot.
I don't know which one is good
Thanks

The last 2 ROMs are for your device, if you have a custom recovery I recommend to install the flashable version from this link .
https://forum.xda-developers.com/g5-plus/development/rom-twrp-flashable-stock-builds-t3675616
Here are the same version of your device NPNS25.137-92-4 (20180101 security patch)

Oh nice !
Is it OK to OTA update on these flashable .zip ? As I have also modified the kernel which is not stock anymore :/

CobraBoyFR said:
Oh nice !
Is it OK to OTA update on these flashable .zip ? As I have also modified the kernel which is not stock anymore :/
Click to expand...
Click to collapse
i didnt try to flash over a fastboot rom, maybe you cant do that.

Thanks
But basically, what I need is flashing full stock firmware (with recovery and kernel), no matter if it's january update or not. Just the factory images I had when I bought the phone. And I don't know what version is OK for my phone (XT1681 with NPNS25.137-92-4 now) 'cause I don't want to hard brick it when OTA updating (to Oreo for example)

From your link the last 2 ROMs are the same so you can use both.
You are on stock right? Do you planning on flashing custom ROMs? If you flash Oreo ROMs and you want to downgrade flashing fastboot rom maybe you lost volte.

RokCruz said:
From your link the last 2 ROMs are the same so you can use both.
You are on stock right? Do you planning on flashing custom ROMs? If you flash Oreo ROMs and you want to downgrade flashing fastboot rom maybe you lost volte.
Click to expand...
Click to collapse
Right now I'm on stock NPNS25.137-92-4, with TWRP recovery + Magisk root + ElementalX kernel
I'm not planning to flash any custom ROM for the moment. When the official Oreo update comes out, I want to update. But I know it won't go well if I OTA update it with my current configuration. That's why I want to be able to flash stock with fastboot (rough clean install), no matter what version I get : All i want is to be able to update to Oreo when it's out. Problem is, I don't know which image I need to download from here : https://firmware.center/firmware/Motorola/Moto G5 Plus/Stock/
I know it's there, but don't know exactly the good version.

This is for our device xt1681
https://firmware.center/firmware/Mo...ubsidy-DEFAULT_regulatory-DEFAULT_CFC.xml.zip
I'm on flashable stock with ex kernel and magisk, when the Oreo ota start rolling out I'll wait for flashable rom so I'll can upgrade (dirty flash) so I don't loose anything.

RokCruz said:
This is for our device xt1681
https://firmware.center/firmware/Mo...ubsidy-DEFAULT_regulatory-DEFAULT_CFC.xml.zip
I'm on flashable stock with ex kernel and magisk, when the Oreo ota start rolling out I'll wait for flashable rom so I'll can upgrade (dirty flash) so I don't loose anything.
Click to expand...
Click to collapse
If your device was flashed with stock firmware newer than NPN25.137-15, I would strongly advise against flashing the NPN25.137-15 stock firmware.
The reason is that downgrading stock firmware downgrades your system, but not usually your bootloader (your bootloader will likely report a security downgrade/pre-flash validation error). As such, you'll have a newer bootloader but older system (in terms of patch levels). For example, you have the NPNS25.137-92-4 stock firmware (before flashing TWRP), so your bootloader is the Jan 2018 patch level. You flash this NPN25.137-15 firmware - you have a Jan 2017 system, but still a Jan 2018 bootloader.
The downgrade generally goes okay. However, taking OTA updates with this mismatch in bootloader and system is generally what results in hard bricks; the OTA update checks for your system patch level - in the above example, you'll probably get the OTA update to upgrade from NPN25.137-15... However, your bootloader is not the NPN25.137-15 patch level bootloader, as such your bootloader may get overwritten by the OTA and gets corrupted in the process, leading to hard bricks. This scenario isn't just applicable for the NPN25.137-15 update, this potentially applies if you flash a stock firmware older than what was on your device and then attempt to use OTA updates (unless you could flash the stock firmware directly preceding the firmware you had).
Easiest way is to re-flash the same stock ROM build you had before flashing TWRP. I don't see any NPNS25.137-92-4 stock ROMs leaked yet from the Motorola Firmware Team page https://androidfilehost.com/?a=show&w=files&flid=171014 or firmware.mirror but hopefully they'll be along soon.
If you're on stock NPNS25.137-92-4, in theory you could flash NPN25.137-92 (the build directly before the NPNS25.137-92-4 Jan 2018 security update), so the next OTA update would update your device to NPNS25.137-92-4 - the OTA would be simply patching your device to the same build it's currently on and in theory that should work. NPN25.137-92 is one of the firmwares currently available so may be worth thinking about. Best thing though is to flash the NPNS25.137-92-4 firmware or newer firmware that is the correct build for XT1681 devices.

echo92 said:
If your device was flashed with stock firmware newer than NPN25.137-15, I would strongly advise against flashing the NPN25.137-15 stock firmware.
The reason is that downgrading stock firmware downgrades your system, but not usually your bootloader (your bootloader will likely report a security downgrade/pre-flash validation error). As such, you'll have a newer bootloader but older system (in terms of patch levels). For example, you have the NPNS25.137-92-4 stock firmware (before flashing TWRP), so your bootloader is the Jan 2018 patch level. You flash this NPN25.137-15 firmware - you have a Jan 2017 system, but still a Jan 2018 bootloader.
The downgrade generally goes okay. However, taking OTA updates with this mismatch in bootloader and system is generally what results in hard bricks; the OTA update checks for your system patch level - in the above example, you'll probably get the OTA update to upgrade from NPN25.137-15... However, your bootloader is not the NPN25.137-15 patch level bootloader, as such your bootloader may get overwritten by the OTA and gets corrupted in the process, leading to hard bricks. This scenario isn't just applicable for the NPN25.137-15 update, this potentially applies if you flash a stock firmware older than what was on your device and then attempt to use OTA updates (unless you could flash the stock firmware directly preceding the firmware you had).
Easiest way is to re-flash the same stock ROM build you had before flashing TWRP. I don't see any NPNS25.137-92-4 stock ROMs leaked yet from the Motorola Firmware Team page https://androidfilehost.com/?a=show&w=files&flid=171014 or firmware.mirror but hopefully they'll be along soon.
If you're on stock NPNS25.137-92-4, in theory you could flash NPN25.137-92 (the build directly before the NPNS25.137-92-4 Jan 2018 security update), so the next OTA update would update your device to NPNS25.137-92-4 - the OTA would be simply patching your device to the same build it's currently on and in theory that should work. NPN25.137-92 is one of the firmwares currently available so may be worth thinking about. Best thing though is to flash the NPNS25.137-92-4 firmware or newer firmware that is the correct build for XT1681 devices.
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In few words we only can flash ROMs with the same compilation number or higher to avoid hard brick right?

RokCruz said:
In few words we only can flash ROMs with the same compilation number or higher to avoid hard brick right?
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Pretty much, yes (or at least it minimises the chances of a hard brick). If you really want to flash older stock ROMs, please do not use OTA updates at all. Ignore the OTA prompt or freeze the Motorola OTA updater if you downgraded your stock firmware. It's not fun seeing a £150-200 (or your regional equivalent) device hard bricked.
However, with Motorola's habit of releasing different builds to different regions, please ensure you flash the correct build for your device, else the Motorola servers may not issue OTAs if you're on the incorrect series of builds for your software channel. The latest available leaked firmware for your device appears to be NPN25.137-92 (we don't have access to NPNS25.137-92-4 yet).

echo92 said:
Pretty much, yes (or at least it minimises the chances of a hard brick). If you really want to flash older stock ROMs, please do not use OTA updates at all. Ignore the OTA prompt or freeze the Motorola OTA updater if you downgraded your stock firmware. It's not fun seeing a £150-200 (or your regional equivalent) device hard bricked.
However, with Motorola's habit of releasing different builds to different regions, please ensure you flash the correct build for your device, else the Motorola servers may not issue OTAs if you're on the incorrect series of builds for your software channel. The latest available leaked firmware for your device appears to be NPN25.137-92 (we don't have access to NPNS25.137-92-4 yet).
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That was roughly what I figured out but damn, those explanations, thanks buddy :highfive:

The January update's bootloader is the same bootloader that the November security patch update has. You can flash the
POTTER_NPN25.137-83_cid50_subsidy-DEFAULT_regulatory-DEFAULT_CFC files from fastboot (skip gpt.bin) then OTA to 93 (November Patch), then OTA to 93-4 (January Patch)
The OTA will not brick the phone since the bootloader the OTA flashes is the same one it is currently on.
Also, this is what I did to get onto the January Patch so I can confirm my phone works fine and did not brick.

driverdis said:
The January update's bootloader is the same bootloader that the November security patch update has. You can flash the
POTTER_NPN25.137-83_cid50_subsidy-DEFAULT_regulatory-DEFAULT_CFC files from fastboot (skip gpt.bin) then OTA to 93 (November Patch), then OTA to 93-4 (January Patch)
The OTA will not brick the phone since the bootloader the OTA flashes is the same one it is currently on.
Also, this is what I did to get onto the January Patch so I can confirm my phone works fine and did not brick.
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On xt1681 right?
Thanks for your feedback

echo92 said:
Pretty much, yes (or at least it minimises the chances of a hard brick). If you really want to flash older stock ROMs, please do not use OTA updates at all. Ignore the OTA prompt or freeze the Motorola OTA updater if you downgraded your stock firmware. It's not fun seeing a £150-200 (or your regional equivalent) device hard bricked.
However, with Motorola's habit of releasing different builds to different regions, please ensure you flash the correct build for your device, else the Motorola servers may not issue OTAs if you're on the incorrect series of builds for your software channel. The latest available leaked firmware for your device appears to be NPN25.137-92 (we don't have access to NPNS25.137-92-4 yet).
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yeah i cant apply normal OTA over flashable rom. I was on NPN25.137-92(flashable) i download NPNS25.137-92-4(flashable too) i dirty flashed it and it works perfect without lose my stuff

I ordered XT1681 International version from Amazon.ca. I replaced the recovery with TWRP. I have two questions.
(1) I am prompted to install 137-92-8 via OTA. Where can I find this TWRP flashable ROM for this version ? I am on 137-92-4.
(2) Is there any other compatible stock ROM that I can install on it ? The OTA message is in Spanish. My preference is in English and as long as it supports the dual SIM and the NIC.
Thanks.

jkl555 said:
I ordered XT1681 International version from Amazon.ca. I replaced the recovery with TWRP. I have two questions.
(1) I am prompted to install 137-92-8 via OTA. Where can I find this TWRP flashable ROM for this version ? I am on 137-92-4.
(2) Is there any other compatible stock ROM that I can install on it ? The OTA message is in Spanish. My preference is in English and as long as it supports the dual SIM and the NIC.
Thanks.
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Just to reply to myself for (2). I found the following link
https://www.stockrom.net/2017/05/st...g5-plus-xt1683-xt1681-android-7-0-nougat.html

From stock Oreo to custom ROM and back to stock Oreo???

I was on Oreo 85.13 pre-release...then I unlocked bootloader...and installed pixel experience...but meanwhile I formatted all data which ihave backed up..then I installed twrp flashable with June security patch zip..and I was on Android 7..then I flashed pixel experience..now..if I want to back on Oreo stock and to lock bootloader..what should I have To do...???I heard somewhere you need stock Oreo ROM zip where I can find one...???is that same one which we have used in manually updating to Oreo... please reply...

As far as I know the only stock Oreo zip we have is the OTA, which can't be used to flash firmware. We need the full firmware file before we're able to flash stock ROMs via fastboot.
Anyway, I'm also curious if there are any differences for the unlocking/flashing/backup process starting at the official Oreo we have now, and if going back to it later is the same as it is with Nougat.

The stock US OTA update can be found here: https://technoplanners.blogspot.com...tock-update-for-moto-g5-plus-OPS28.85-13.html
This can be side-loaded to upgrade after you've flashed Nougat with one caveat. Nougat has to be at Build number NPNS25.137-92. If your Nougat ROM has the June security patches (Build number NPNS25.137-93) you'll be SOL since the manifest specifies the pre-req for the update. So the fools at Motorola released the June update for Nougat, then released Oreo at the same security patch level and won't let you apply the update. Real geniuses.

nvrpayretail said:
The stock OTA update can be found here: https://technoplanners.blogspot.com...tock-update-for-moto-g5-plus-OPS28.85-13.html
This can be side-loaded to upgrade after you've flashed Nougat with one caveat. Nougat has to be at Build number NPNS25.137-92. If your Nougat ROM has the June security patches (Build number NPNS25.137-93) you'll be SOL since the manifest specifies the pre-req for the update. So the fools at Motorola released the June update for Nougat, then released Oreo at the same security patch level and won't let you apply the update. Real geniuses.
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That's not quite correct; the build required for this Oreo OTA that's currently around is NPNS25.137-92-14 (June 2018 security patch for Brazil and Indian devices). The NPNS25.137-93-14 patch you mentioned is the June 2018 patch for EU, US and Asian devices, which means the Oreo patch for those devices isn't around yet.
To the opening poster, as previously mentioned, you will have to wait for the OPS28.85-13 stock fastboot ROM to be leaked. You must lock with a stock firmware as new or newer than your current bootloader. You cannot downgrade bootloaders via fastboot anyway and it's really not recommended to downgrade.

The US patch is available (Blur_Version.28.51.16.potter.retail.en.US.zip). It can be downloaded from the link I provided.
Correction: My bad. Didn't realize "92" indicated India and "93" indicated US. Evidently the referenced download is labeled wrong