[GUIDE] [HOW TO] Return Your Huawei Watch 2 to Stock

SonicBoomII · Aug 8, 2019

Hi, everyone. After reading posts of (and having experienced my own) boot loops and seeing as how there is a guide for the first Huawei watch,
I've decided that there should also be a guide for restoring the Huawei Watch 2 to stock ROM.

Getting Prepared

The bootloader unlocked on the watch. For instructions on how to do so, read janjan's TWRP Recovery guide.
ADB/fastboot and drivers already setup on your computer
ADB debugging enabled on the watch. You can find instructions for this at the same URL link above.

Restoring Via Batch/Shell Executable

The stock image files in janjan's thread are no longer available, so you'll have to go to this Reddit thread for the file.
Under the "Flashing back to stock" section, download the appropriate version for your watch.
Reboot your watch to bootloader either manually or via the ADB command:
Code:
```
adb reboot bootloader
```
Unzip the file

For Sawfish Devices:
At the command line, type in the following:

Code:

flash-all.bat (for Windows) or .flash-all.sh (for Linux)
fastboot oem lock
fastboot reboot

For Sawshark Devices: (or if you were having trouble executing the flash-all file successfully. NOTE: There's a missing image
file in the Sawshark stock file, so the flash-all file will not run successfully.)
Go to the folder where you extracted the stock image file and extract the zip file that's there.
Then go to the command line and type in the following:
Code:
```
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash system system.img
fastboot oem lock
fastboot reboot
```

Credits/Thanks
janjan - HUAWEI WATCH 2 (LTE-Sawshark) & (BT-Sawfish)-OWDE.180926.001.A1
- [RECOVERY]+[sawshark(4G)+sawfish(BT)]Unofficial TWRP 3.1.1-0-[29-3-18]
travis82 - [ROM] [KERNEL] [SAWSHARK] Oreo OWDE.180215.017 [DEC/24/2018]
Skin1980 - [GUIDE] [HOWTO] Return to stock for Huawei Watch
davpel - [GUIDE][HOW TO]Boot into Fastboot Mode
CadBuRy.VN - [Rom][NXG46W] Huawei Watch 2 4G L-09S Global Fastboot [Factory Images]

ingcarranza88 · Aug 9, 2019

Great guide.
Will try this on my watch.
Thanks.

Timewolf · Aug 22, 2019

does not work on leo-dlxx...it will kill the device i restored via twrp another rom
anyone have a stock rom for leo-dlxx?

SonicBoomII · Aug 26, 2019

Timewolf said:
does not work on leo-dlxx...it will kill the device i restored via twrp another rom
anyone have a stock rom for leo-dlxx?

I actually have the Leo-DLXX and I wrote this guide mainly for that watch. Do you remember what error messages you received? How does it kill the device?

melkor.beta · Aug 27, 2019

How prevent upgrade after this? I flash it and all good, but it upgrades to last firmware and I see no solution to stop it

KDPD · Sep 5, 2019

"Invalid sparse file format at header magi" while trying to flash system.img

Goovsky · Jun 22, 2020

Thanks!!! You saved my Smartwach because it was bricked and I couldn't find orginal stock firmware

ah3703 · Dec 13, 2020

not work with sawshark leo-dll only stuck in logo

square_eyes · May 23, 2021

Hi. I purchased this watch for a specific medical reason, because the developer of an app xDrip (for continuous glucose monitoring), produced a patch for it to work with my medical device (works around a common buggy Wear OS implementation across many manufacturers.) Unfortunately their patch seems to only work on the firmware OWDD.180215.018, but mine came with OWDD.180926.001.A1.

Any tips to downgrading to OWDD.180215.018? I have the files and tried flashing the zip from TWRP and also Fastboot with flash-all.sh. Both fail.

% ./flash-all.sh
Sending 'bootloader' (10020 KB)                    OKAY [  0.468s]
Writing 'bootloader'                               OKAY [  3.323s]
Finished. Total time: 4.139s
Rebooting into bootloader                          OKAY [  0.115s]
Finished. Total time: 0.116s
--------------------------------------------
Bootloader Version...: SAWFISHV6.5
Baseband Version.....: N/A
Serial Number........: YGV7XXXXXXXXXXXX
--------------------------------------------
extracting android-info.txt (0 MB) to RAM...
Checking 'product'                                 OKAY [  0.111s]
Checking 'version-bootloader'                      OKAY [  0.115s]
Snapshot cancel                                    FAILED (remote: 'unknown command')
fastboot: error: Command failed

A little bit of info on the patch (if that is of any use - maybe it can be tweaked itself) https://github.com/NightscoutFoundation/xDrip/wiki/Patching-Android-Wear-devices-for-use-with-the-G5

Lord Sithek · May 23, 2021

square_eyes said:
Hi. I purchased this watch for a specific medical reason, because the developer of an app xDrip (for continuous glucose monitoring), produced a patch for it to work with my medical device (works around a common buggy Wear OS implementation across many manufacturers.) Unfortunately their patch seems to only work on the firmware OWDD.180215.018, but mine came with OWDD.180926.001.A1.

Any tips to downgrading to OWDD.180215.018? I have the files and tried flashing the zip from TWRP and also Fastboot with flash-all.sh. Both fail.

% ./flash-all.sh Sending 'bootloader' (10020 KB) OKAY [ 0.468s] Writing 'bootloader' OKAY [ 3.323s] Finished. Total time: 4.139s Rebooting into bootloader OKAY [ 0.115s] Finished. Total time: 0.116s -------------------------------------------- Bootloader Version...: SAWFISHV6.5 Baseband Version.....: N/A Serial Number........: YGV7XXXXXXXXXXXX -------------------------------------------- extracting android-info.txt (0 MB) to RAM... Checking 'product' OKAY [ 0.111s] Checking 'version-bootloader' OKAY [ 0.115s] Snapshot cancel FAILED (remote: 'unknown command') fastboot: error: Command failed

A little bit of info on the patch (if that is of any use - maybe it can be tweaked itself) https://github.com/NightscoutFoundation/xDrip/wiki/Patching-Android-Wear-devices-for-use-with-the-G5

Well, I haven't ever seen sth like you're trying to do, but can you point me to the source of the rom you're trying to flash?

Lord Sithek · May 23, 2021

square_eyes said:
Hi. I purchased this watch for a specific medical reason, because the developer of an app xDrip (for continuous glucose monitoring), produced a patch for it to work with my medical device (works around a common buggy Wear OS implementation across many manufacturers.) Unfortunately their patch seems to only work on the firmware OWDD.180215.018, but mine came with OWDD.180926.001.A1.

Any tips to downgrading to OWDD.180215.018? I have the files and tried flashing the zip from TWRP and also Fastboot with flash-all.sh. Both fail.

% ./flash-all.sh Sending 'bootloader' (10020 KB) OKAY [ 0.468s] Writing 'bootloader' OKAY [ 3.323s] Finished. Total time: 4.139s Rebooting into bootloader OKAY [ 0.115s] Finished. Total time: 0.116s -------------------------------------------- Bootloader Version...: SAWFISHV6.5 Baseband Version.....: N/A Serial Number........: YGV7XXXXXXXXXXXX -------------------------------------------- extracting android-info.txt (0 MB) to RAM... Checking 'product' OKAY [ 0.111s] Checking 'version-bootloader' OKAY [ 0.115s] Snapshot cancel FAILED (remote: 'unknown command') fastboot: error: Command failed

A little bit of info on the patch (if that is of any use - maybe it can be tweaked itself) https://github.com/NightscoutFoundation/xDrip/wiki/Patching-Android-Wear-devices-for-use-with-the-G5

And the second question: Do you own sawfish (WiFi) or Sawshark (LTE) watch?
(I'm going to sleep soon but I'll take a look on this tomorrow)

square_eyes · May 23, 2021

Lord Sithek said:
And the second question: Do you own sawfish (WiFi) or Sawshark (LTE) watch?
(I'm going to sleep soon but I'll take a look on this tomorrow)

sawfish sorry! Will update post. ROM is in the link but I'll have to ask the dev for the source.

Lord Sithek · May 24, 2021

Lord Sithek said:
square_eyes said:

sawfish sorry! Will update post. ROM is in the link but I'll have to ask the dev for the source.

Click to expand...

Click to collapse

Can you share the link or the site where it was posted?.I just wanted to take a look

Anyway, maybe you could try the approach from the instructions for sawshark from the opening post here. I mean extract zip and flash images separately in fastboot mode.

Also make sure you have the correct rom version for wifi variant

square_eyes · May 28, 2021

Lord Sithek said:
Can you share the link or the site where it was posted?.I just wanted to take a look Anyway, maybe you could try the approach from the instructions for sawshark from the opening post here. I mean extract zip and flash images separately in fastboot mode.

Also make sure you have the correct rom version for wifi variant

I ended up getting it working. See here for how I rolled back the Wear OS version... https://github.com/NightscoutFoundation/xDrip/issues/749#issuecomment-850037862

Below is the link from above with the files (not source sorry - I'm not sure where that's kept). If you know how to make the demigod patch compatible with the latest official firmware/or even an unofficial ROM, that would be awesome.

See Huawei Watch 2 Care Pack .zip on...

Patching Android Wear devices for use with the G5

Nightscout version of xDrip+. Contribute to NightscoutFoundation/xDrip development by creating an account on GitHub.

github.com

the zip has two patches, and instructions.

Lord Sithek · May 28, 2021

square_eyes said:
I ended up getting it working. See here for how I rolled back the Wear OS version... https://github.com/NightscoutFoundation/xDrip/issues/749#issuecomment-850037862

Below is the link from above with the files (not source sorry - I'm not sure where that's kept). If you know how to make the demigod patch compatible with the latest official firmware/or even an unofficial ROM, that would be awesome.

See Huawei Watch 2 Care Pack .zip on...

Patching Android Wear devices for use with the G5

Nightscout version of xDrip+. Contribute to NightscoutFoundation/xDrip development by creating an account on GitHub.

github.com

the zip has two patches, and instructions.

Great, glad it worked for you. Unfortunatelly, Im not that skillfull to help you with latest firmware...

Topics

Topics

[GUIDE] [HOW TO] Return Your Huawei Watch 2 to Stock

SonicBoomII

Member

ingcarranza88

Senior Member

Timewolf

Senior Member

SonicBoomII

Member

melkor.beta

New member

KDPD

Member

Goovsky

Member

ah3703

Member

square_eyes

Senior Member

Lord Sithek

Senior Member

Lord Sithek

Senior Member

square_eyes

Senior Member

Lord Sithek

Senior Member

square_eyes

Senior Member

Patching Android Wear devices for use with the G5

Lord Sithek

Senior Member

Patching Android Wear devices for use with the G5

Similar threads

Top Liked Posts

New posts