Related
I noticed some annoying bugs in Emui, so I thought "hey, why don't reinstall the OS" I tried it over HiSuite but it didn't worked out. After that i noticed the "download the full current package" button in System update. The button does nothing, is this normal? I'm just confused asf, the Mate 9 is my first device so idk. I also noticed that Huawei isnt offering the full roms anywhere where the public can find it easily. OnePlus & Samsung did a better job there... Is there even an easy way to reinstall the OS or update it manually?
idealfall1 said:
I noticed some annoying bugs in Emui, so I thought "hey, why don't reinstall the OS" I tried it over HiSuite but it didn't worked out. After that i noticed the "download the full current package" button in System update. The button does nothing, is this normal? I'm just confused asf, the Mate 9 is my first device so idk. I also noticed that Huawei isnt offering the full roms anywhere where the public can find it easily. OnePlus & Samsung did a better job there... Is there even an easy way to reinstall the OS or update it manually?
Click to expand...
Click to collapse
Yes. It is normal when System Update doesn't download "full package", cause it checks current and choose not download same version.
And yes. Huawei doesn't offer full ROMs in easy places. They post all ROMs on HiCloud (Huawei Cloud Resource) silently. In a few cases they can post ROMs on Huawei official site, but it is too rare.
Huawei thinks that no necessary to told everyone that new version is coming, cause they are using method with OTA updates.
And no. There is no easy way to reinstall OS or update manually, but with some exceptions.
Current free method uses modified recovery to force update. It requires bootloader unlock procedure (unlock forces factory reset procedure). Additionally method requires some knowledge how whole process is running.
There is paid method also. It is easy in general and you should DNS setup only. But a few percents are choosing pay for service what helps people to install free ROMs.
5[Strogino said:
;73023612]Yes. It is normal when System Update doesn't download "full package", cause it checks current and choose not download same version.
And yes. Huawei doesn't offer full ROMs in easy places. They post all ROMs on HiCloud (Huawei Cloud Resource) silently. In a few cases they can post ROMs on Huawei official site, but it is too rare.
Huawei thinks that no necessary to told everyone that new version is coming, cause they are using method with OTA updates.
And no. There is no easy way to reinstall OS or update manually, but with some exceptions.
Current free method uses modified recovery to force update. It requires bootloader unlock procedure (unlock forces factory reset procedure). Additionally method requires some knowledge how whole process is running.
There is paid method also. It is easy in general and you should DNS setup only. But a few percents are choosing pay for service what helps people to install free ROMs.
Click to expand...
Click to collapse
OK thanks, than I will wait for the next OTA
5[Strogino] said:
Yes. It is normal when System Update doesn't download "full package", cause it checks current and choose not download same version.
And yes. Huawei doesn't offer full ROMs in easy places. They post all ROMs on HiCloud (Huawei Cloud Resource) silently. In a few cases they can post ROMs on Huawei official site, but it is too rare.
Huawei thinks that no necessary to told everyone that new version is coming, cause they are using method with OTA updates.
And no. There is no easy way to reinstall OS or update manually, but with some exceptions.
Current free method uses modified recovery to force update. It requires bootloader unlock procedure (unlock forces factory reset procedure). Additionally method requires some knowledge how whole process is running.
There is paid method also. It is easy in general and you should DNS setup only. But a few percents are choosing pay for service what helps people to install free ROMs.
Click to expand...
Click to collapse
Are you serious ??
@idealfall1
The easy place to download firmware is firmware finder on Google play store they have all Huawei firmware for all model...
Or we have this site
http://hwmt.ru/oth/HWFF/info/view.php?find_model=
Find your model number and download it.
And for finish we have a very very easy way to force re-installing firmware without root or flash recovery or paid solution or unlock bootloader... It's the 3 button method !!!
Create a folder in external SD card, call him dload and put firmware (update.app) in, turn off your phone press volume down + volume up + power in the same time and voilà
Sorry for my bad english
Lykeul said:
Are you serious ??
Click to expand...
Click to collapse
Absolutely.
Lykeul said:
The easy place to download firmware is firmware finder on Google play store they have all Huawei firmware for all model...
Or we have this site
http://hwmt.ru/oth/HWFF/info/view.php?find_model=
Find your model number and download it.
Click to expand...
Click to collapse
Huawei Firmware Finder is private project of enthusiasts. They don't host any firmware and only help people to find ROM in HiCloud. But question from idealfall1 was why Huawei isnt offering the full roms anywhere where the public can find it easily. Other manufacturers do it.
Lykeul said:
And for finish we have a very very easy way to force re-installing firmware without root or flash recovery or paid solution or unlock bootloader... It's the 3 button method !!!
Create a folder in external SD card, call him dload and put firmware (update.app) in, turn off your phone press volume down + volume up + power in the same time and voilà
Sorry for my bad english
:good:
Click to expand...
Click to collapse
Do you have Mate 9? Did you try install something with 3-button method? I tried many times. It is not working.
In case of Mate 9 Huawei added special tag "UPDATE_ONLINE" in rom. And most roms are with this tag will not install via 3-button...
5[Strogino] said:
Absolutely.
Huawei Firmware Finder is private project of enthusiasts. They don't host any firmware and only help people to find ROM in HiCloud. But question from idealfall1 was why Huawei isnt offering the full roms anywhere where the public can find it easily. Other manufacturers do it.
Do you have Mate 9? Did you try install something with 3-button method? I tried many times. It is not working.
In case of Mate 9 Huawei added special tag "UPDATE_ONLINE" in rom. And most roms are with this tag will not install via 3-button...
Click to expand...
Click to collapse
Yes I have ONE MHA-L29C185 and I upgraded my phone with this method so maybe work for him,
Lykeul said:
Yes I have ONE MHA-L29C185 and I upgraded my phone with this method so maybe work for him,
Click to expand...
Click to collapse
If you are right, so it is very good news!
5 or 6 months nobody can't install roms via 3-button. There are only 3 service ROMs with tag "offline_update".
What exact version do you have? I will download and check for tag.
5[Strogino said:
;73024144]Absolutely.
Huawei Firmware Finder is private project of enthusiasts....
...It is not working. In case of Mate 9 Huawei added special tag "UPDATE_ONLINE" in rom. And most roms are with this tag will not install via 3-button...
Click to expand...
Click to collapse
Ok, conclusion time. Mate 9 users cannot update via 3-button because of this special flag/string. Does the firmware finder work? It's technically an online update, right? I'm a little bit confused... Firmware Finder found for me some FWs from june... Can I install them? Sorry I'm not looking through this mess xD
When I buy it they are in b126 version and upload on b138 but if the 3 button method don't work for update firmware like you say may be can work for him because he want flash the same version of firmware, are you fellow my reasoning ?
idealfall1 said:
Ok, conclusion time. Mate 9 users cannot update via 3-button because of this special flag/string. Does the firmware finder work? It's technically an online update, right? I'm a little bit confused... Firmware Finder found for me some FWs from june... Can I install them? Sorry I'm not looking through this mess xD
Click to expand...
Click to collapse
If you're using FF, you must know that it forces ROM to system update.
Workflow is simple:
1. Find ROM
2. Force to system update
System Update will download ROM by self, like update is coming from Huawei officially.
But Huawei prevents this trick on very new ROMs and additionally checks for authorization.
In it's turn, FF can check ROM too, tries to reproduce Huawei's routine.
So, if you want install latest rom, you have to use method with modified recovery to force update.
If you want install old ROM - force update via FF.
P.s. We are all huaweied
---------- Post added at 06:41 PM ---------- Previous post was at 06:36 PM ----------
Lykeul said:
When I buy it they are in b126 version and upload on b138 but if the 3 button method don't work for update firmware like you say may be can work for him because he want flash the same version of firmware, are you fellow my reasoning ?
Click to expand...
Click to collapse
Yeah. Good idea.
Three button reset does not work with the Mate 9.
It just doesn't.
You can only factory reset if you're on stock.
That applies to ALL stock firmware as far as I know.
Hi Folks,
Seeing around various section of all the models when users are struggling to restore their phone either due the flashing an incorrect firmware or after updating via Firmware Finder app and then wanting to rollback to earlier version of EMUI. They sometime cannot even flash the custom ROMs due to FRP lock or unable to flash the custom recovery and even after trying all the known methods, we struggle to restore their phone as they messed up badly with their phone and model or version change to something unexpected.
In this thread, lets discuss and share about rollback files available for various models (be it MM, Lollipop anything) so that new users could use it to restore to their original version and then update to official versions.
Hi Folks,
Seeing around various section of all the models when users are struggling to restore their phone either due the flashing an incorrect firmware or after updating via Firmware Finder app and then wanting to rollback to earlier version of EMUI. They sometime cannot even flash the custom ROMs due to FRP lock or unable to flash the custom recovery and even after trying all the known methods, we struggle to restore their phone as they messed up badly with their phone and model or version change to something unexpected.
In this thread, lets discuss and share about rollback files available for various models (be it MM, Lollipop anything) so that new users could use it to restore to their original version and then update to official versions.
I have read about this problem on another thread but the problem was poorly explained and i couldn't follow to the processes explained on the replies, so i have created another new thread regarding this problem, because, in addition to being very useful for me, it might be even more useful for people that are searching for a solution.
I will explain briefly the scenario before talking about the problem itself.
I recently (1d ago) got my telephone blocked because of a Hard Brick that i managed to overcome using
DC Phoenix, from which i installed Emui 4.1 and then automatically updated via the built-in updater to Emui 5.0
As before my hard brick i was on a more recent build, Emui 5.1 (B394), i searched on the internet and understood that my current Firmware, "NRD90M test-keys" is a test build (or something like that) which can't be updated with the built-in updater.
So, i want to ask, in order to avoid getting bricked again, if there is a way i can update to the latest Emui available for my device, as in the current state the build, in addition to being obsolete, is also unstable and reports some compatibility errors, E.G. error retrieving microphone service when sending audio messages on WhatsApp, ecc.
i have heard of a method consisting of rolling-back the device to 4.1 again and installing 5.1 via Dload, but can you tell me how to do it more in detail?
EDIT:
Problem solved by rolling back to 4.1 b131 and then updated from internal updater app
Thanks in advance,
Federico
Federico Cervelli said:
I have read about this problem on another thread but the problem was poorly explained and i couldn't follow to the processes explained on the replies, so i have created another new thread regarding this problem, because, in addition to being very useful for me, it might be even more useful for people that are searching for a solution.
I will explain briefly the scenario before talking about the problem itself.
I recently (1d ago) got my telephone blocked because of a Hard Brick that i managed to overcome using
DC Phoenix, from which i installed Emui 4.1 and then automatically updated via the built-in updater to Emui 5.0
As before my hard brick i was on a more recent build, Emui 5.1 (B394), i searched on the internet and understood that my current Firmware, "NRD90M test-keys" is a test build (or something like that) which can't be updated with the built-in updater.
So, i want to ask, in order to avoid getting bricked again, if there is a way i can update to the latest Emui available for my device, as in the current state the build, in addition to being obsolete, is also unstable and reports some compatibility errors, E.G. error retrieving microphone service when sending audio messages on WhatsApp, ecc.
i have heard of a method consisting of rolling-back the device to 4.1 again and installing 5.1 via Dload, but can you tell me how to do it more in detail?
Thanks in advance,
Federico
Click to expand...
Click to collapse
This Should Help You.
https://forum.xda-developers.com/honor-8/how-to/to-emui5-custom-roms-tested-openkirin-t3638445
I assume since you rolled back you have a locked bootloader atm.
Now i know these guides are somewhere but now that you mention it they do seem somewhat hard to find. ( on the app anyways)
But as for rolling back and then updating again via dload ( not TWRP) you need the rollback package and official firmware for your phone model.
Google and/or the guides section here should help you find those.
It should give you two zips containing an UPDATE.APP file each.
You need to put these on a folder named dload (one file at a time)on your sdcard( internal storage should do, too but no guarantees).
Create the folder if it doesn't exist.
Put in the rollback update.app in first.
Then power down and hold vol up+ vol down while powering up and it should flash the file.
Let it finish, boot up, put in the update.app from the firmware in the dload folder ( remove the old file) and repeat the process.
That should be it.
Also, you might be able to sinply dload the actual firmware from the test key build without rolling back but i haven't tried ( i think )
Should the dload process fail, you most likely have the wrong file in your dload folder, or multiple files.
I should mention that the rollback file actually brings you to a test.keys build. It's necessary to flash to full firmware afterwards and dloading the rollback file has always worked for me.
Personally i found that keeping the rollback update.app file for the rollback in the dload folder at all times is a good security measure. (besides the usual backups)
Sent from my OnePlus5 using XDA Labs
SharxX8 said:
I assume since you rolled back you have a locked bootloader atm.
Now i know these guides are somewhere but now that you mention it they do seem somewhat hard to find. ( on the app anyways)
But as for rolling back and then updating again via dload ( not TWRP) you need the rollback package and official firmware for your phone model.
Google and/or the guides section here should help you find those.
It should give you two zips containing an UPDATE.APP file each.
You need to put these on a folder named dload (one file at a time)on your sdcard( internal storage should do, too but no guarantees).
Create the folder if it doesn't exist.
Put in the rollback update.app in first.
Then power down and hold vol up+ vol down while powering up and it should flash the file.
Let it finish, boot up, put in the update.app from the firmware in the dload folder ( remove the old file) and repeat the process.
That should be it.
Also, you might be able to sinply dload the actual firmware from the test key build without rolling back but i haven't tried ( i think )
Should the dload process fail, you most likely have the wrong file in your dload folder, or multiple files.
I should mention that the rollback file actually brings you to a test.keys build. It's necessary to flash to full firmware afterwards and dloading the rollback file has always worked for me.
Personally i found that keeping the rollback update.app file for the rollback in the dload folder at all times is a good security measure. (besides the usual backups)
Sent from my OnePlus5 using XDA Labs
Click to expand...
Click to collapse
can you tell me what rollback package to use? i tried "(FRD-L19&L09, from Android 7.0, EMUI 5.0 to Android 6.0 EMUI 4.1, C900B300, Western Europe)" and didn't work
If you have an L09/19 it should work. Just make sure to flash the rollback package first.
Otherwise since you are on a test key build already, you might want to try to dload MM directly or if that doesn't work, try a stock nougat firmware via dload.
You could also try updating with Firmware Finder via proxy
Sent from my OnePlus5 using XDA Labs
SharxX8 said:
If you have an L09/19 it should work. Just make sure to flash the rollback package first.
Otherwise since you are on a test key build already, you might want to try to dload MM directly or if that doesn't work, try a stock nougat firmware via dload.
You could also try updating with Firmware Finder via proxy
Sent from my OnePlus5 using XDA Labs
Click to expand...
Click to collapse
i'm at 4.1 b131, now should i update via updater (ver. L09C432B380 2,36GB) or it's test keys?
Federico Cervelli said:
i'm at 4.1 b131, now should i update via updater (ver. L09C432B380 2,36GB) or it's test keys?
Click to expand...
Click to collapse
If you are on a regular version of MM, as I understand it, you can update normally, yes
SharxX8 said:
If you are on a regular version of MM, as I understand it, you can update normally, yes
Click to expand...
Click to collapse
but last time i did it it brang me to test keys .-.
EDIT: i tried and it's all working, Thanks!
Federico Cervelli said:
I have read about this problem on another thread but the problem was poorly explained and i couldn't follow to the processes explained on the replies, so i have created another new thread regarding this problem, because, in addition to being very useful for me, it might be even more useful for people that are searching for a solution.
I will explain briefly the scenario before talking about the problem itself.
I recently (1d ago) got my telephone blocked because of a Hard Brick that i managed to overcome using
DC Phoenix, from which i installed Emui 4.1 and then automatically updated via the built-in updater to Emui 5.0
As before my hard brick i was on a more recent build, Emui 5.1 (B394), i searched on the internet and understood that my current Firmware, "NRD90M test-keys" is a test build (or something like that) which can't be updated with the built-in updater.
So, i want to ask, in order to avoid getting bricked again, if there is a way i can update to the latest Emui available for my device, as in the current state the build, in addition to being obsolete, is also unstable and reports some compatibility errors, E.G. error retrieving microphone service when sending audio messages on WhatsApp, ecc.
i have heard of a method consisting of rolling-back the device to 4.1 again and installing 5.1 via Dload, but can you tell me how to do it more in detail?
EDIT:
Problem solved by rolling back to 4.1 b131 and then updated from internal updater app
Thanks in advance,
Federico
Click to expand...
Click to collapse
I am in a very similar situation and unable to solve this. Could some one help in this?
I had unlocked bootload, TWRP and Root. I decided to unroot and lock the bootloader. So, by following the steps mentioned in a different thread, I could successfully flash Marshmallow B130 through Force Update.
Steps followed:
1. Flash Rollback package
2. Flash Full OTA (Marshmallow on B130) from Huawei website which flashed
Now, the real problem started while trying to upgrade to Nougat.
I tried downloading B350 firmware from Firmware Finder. After slow download, it installs fine. But, after reboot I face below problems.
1. The OS is very sluggish and crashes so often
2. The build number says NRD***-test keys
3. No keyboard installed, so not able to login to Google as well.
4. At this point, Factory Reset, Wipe Cache Partition, rollback everything fails.
I had to unlock the bootloader and again force update Rollback Package and then to Marshmallow B130.
Now, I am stuck with B130. I tried downloading B340 and B361 thru Firmware Finder. Both of them installed but with the same result. I mean No keyboard, Test-keys build, Crashes
My Honor 8 model: FRD-L02
What should I do upgrade to Nougat? I have no confidence in Firmware Finder method. Any help appreciated
It's EMUI 5.0.1 not 5.1, I think.
Good morning
So I've a xiaoxin pad 11 pro:
Model: tb-j706f
android version: 10
software version: tb-_706f_rf01_201229
ROM: TB-J706F_S240073_201229_ROW
kernel: 4.14.117 from 2020
Widevine: L1
And I whant to update to TB-J706F_S620150_211226_ROW. So my questions are many
-Can i use lenovo sofware to update?
-Do i need to lock or unlock oem bootloader from settings?
-Can only be done using QFIL or other softwares?
-Do i need to find out if it's region lock?
-How to backup this img, if everything goes wrong?
-Do i have to install the original chinese version, or can i just update the international one?
I see alot of threats talking about going from international to chinese, but I like to have play store and keepping widevine lv.1. Without having to do a lot of "work".
I've tried to use the OTA function, but downloads the update (just after my current version) it restart's and gets to the lenovo logo on the screen and reboots. Like a boot loop. I've to manually shutdown the tablet and it's back to normal.
After readding this forum, i still dont see a uniform way to update this device, and more importantly a easy way to do it. Can all of you help me?
- yes
- no
- yes
- even CN versions can be flashed with global rom
- you could still flash an img you download online if something wrongs happen
- it's on your own, if you have L1 with global unless you want latest updates no need to go CN, stay global.
if OTA update doesn't work maybe reset the device or even flash the newest rom available from lolinet then update with OTA.
@melones22 Thanks for the aswers.
Do you know if i download the newest global rom from lolinet, and force install, if i keep my lv1?
if you relock bootloader, likely. personally with natsafety patch + hde etc still l3
be absolute sure that you didn’t modified anything else than flashing before relocking
front3 said:
Good morning
So I've a xiaoxin pad 11 pro:
Model: tb-j706f
android version: 10
software version: tb-_706f_rf01_201229
ROM: TB-J706F_S240073_201229_ROW
kernel: 4.14.117 from 2020
Widevine: L1
And I whant to update to TB-J706F_S620150_211226_ROW. So my questions are many
-Can i use lenovo sofware to update?
Click to expand...
Click to collapse
Yes, but I nver used it
front3 said:
-Do i need to lock or unlock oem bootloader from settings?
Click to expand...
Click to collapse
If you flash stock ROMs CN or Global you do NOT need to unlock bootloader
front3 said:
-Can only be done using QFIL or other softwares?
Click to expand...
Click to collapse
To flash a ROM you can use QFIL, I never used Lenovo softwaare so I am not sure if you can flash form there only last version or if you have a choice.
Normally you should not be required to use QFIL and you should be able to update with OTA updates.
front3 said:
-Do i need to find out if it's region lock?
Click to expand...
Click to collapse
If you are having problems updating I guess it doesn't hurt finding that out.
front3 said:
-How to backup this img, if everything goes wrong?
Click to expand...
Click to collapse
You should backup QCN with QFIL and all partitions (you can probably exclude vendor and userdata) with QFIL or edl, there is a guide for both methods (I use edl) https://forum.xda-developers.com/t/two-ways-to-backup-tb-j706f-without-unlocking-bootloader.4402799/
front3 said:
-Do i have to install the original chinese version, or can i just update the international one?
Click to expand...
Click to collapse
You should be able to update your global ROM but since you are having problems I don't exclude you might need to go back to CN ROM before flashing again the Global ROM.
front3 said:
I see alot of threats talking about going from international to chinese, but I like to have play store and keepping widevine lv.1. Without having to do a lot of "work".
I've tried to use the OTA function, but downloads the update (just after my current version) it restart's and gets to the lenovo logo on the screen and reboots. Like a boot loop. I've to manually shutdown the tablet and it's back to normal.
After readding this forum, i still dont see a uniform way to update this device, and more importantly a easy way to do it. Can all of you help me?
Click to expand...
Click to collapse
I am not sure what's the problem with your OTA update.
I would suggest to:
Backup your QCN and all partitions first
Open your QCN with QCNView and check the region in NV Item 6858
If your region is 02 is Global and OTA update should work, so maybe try a factory reset and see if after OTA update works.
If it's 00 (region unlocked) or 01 (China) that might be the reason OTA updates are not working.
Edit
I read again the version you have now and it's quite old, that probably does not have any region lock.
In the one tablet I had from the shop with Chinese ROM I flashed TB-J706F_S250260_210804_ROW, that set it as global region and then from that I run OTA updates.
So I think you should backup as I said before and then flash TB-J706F_S250260_210804_ROW, make sure to select the right settings in QFIL and NEVER check "Reset state machine".
MrCrayon said:
Yes, but I nver used it
If you flash stock ROMs CN or Global you do NOT need to unlock bootloader
To flash a ROM you can use QFIL, I never used Lenovo softwaare so I am not sure if you can flash form there only last version or if you have a choice.
Normally you should not be required to use QFIL and you should be able to update with OTA updates.
If you are having problems updating I guess it doesn't hurt finding that out.
You should backup QCN with QFIL and all partitions (you can probably exclude vendor and userdata) with QFIL or edl, there is a guide for both methods (I use edl) https://forum.xda-developers.com/t/two-ways-to-backup-tb-j706f-without-unlocking-bootloader.4402799/
You should be able to update your global ROM but since you are having problems I don't exclude you might need to go back to CN ROM before flashing again the Global ROM.
I am not sure what's the problem with your OTA update.
I would suggest to:
Backup your QCN and all partitions first
Open your QCN with QCNView and check the region in NV Item 6858
If your region is 02 is Global and OTA update should work, so maybe try a factory reset and see if after OTA update works.
If it's 00 (region unlocked) or 01 (China) that might be the reason OTA updates are not working.
Edit
I read again the version you have now and it's quite old, that probably does not have any region lock.
In the one tablet I had from the shop with Chinese ROM I flashed TB-J706F_S250260_210804_ROW, that set it as global region and then from that I run OTA updates.
So I think you should backup as I said before and then flash TB-J706F_S250260_210804_ROW, make sure to select the right settings in QFIL and NEVER check "Reset state machine".
Click to expand...
Click to collapse
Hi Mr. Crayon,
Is there any guide in how to do as what you mentioned above ? I'm quite new to this 'manual update' and still learning. Would really appreciate your help on this. My Xiaoxin Pad Pro 2020 (TB-J706F_S268018_210731_ROW) is still running on android 10 and my device is not certified by play protect. T.T
Hello.
Thanks @MrCrayon, but i never has able to use qfil to backup my device. To complicated for me. But thanks for the help.
So what i did to update my tablet. After feeling the same way @shaoki92 , i just tried to use lenovo tools. And... puff... update done.
No problems what so ever,
Did not lose L1
And did not have to mess with bootloader or region lock.
But i understand that i took a big risk. The tablet could've become just a paper weight. But until now working fine. With new android and everything.
front3 said:
Hello.
Thanks @MrCrayon, but i never has able to use qfil to backup my device. To complicated for me. But thanks for the help.
So what i did to update my tablet. After feeling the same way @shaoki92 , i just tried to use lenovo tools. And... puff... update done.
No problems what so ever,
Did not lose L1
And did not have to mess with bootloader or region lock.
But i understand that i took a big risk. The tablet could've become just a paper weight. But until now working fine. With new android and everything.
Click to expand...
Click to collapse
Hi front3,
May i ask how do you update using lenovo tools ? Thanks
Im no expert that so ever. But i can tell you that i did.
Install lenovo assistance, on windows.
Used the charging cable of the tablet to connect to pc.
Launch the app
Connect to the device via app
(And i dont remember now, but i think its recue my device, and update, inside the app)
The app gives you a warning about using the tool on CH devices, and i took the risk.
Check the firmware version that the app gives you, and what it the lastest that has been deploid. Just to be sure. And do it if you dont mind taking the risk, do it.
In my case, the version that the app recomended has not on lolinet at that time. It only show up there, weeks later. But because the app connects to lenovo servers directly, i think it was safe.
Be careful because you can brick the device. And like @MrCrayon explained, i had one very old firmware, so xiaoxin didnt have the same "security" feactures has the newer devices. So maybe that is why it worked.