[Guide] How to Downgrade M9 Pro Oreo Beta to Official Nougat - Huawei Mate 9 Pro Guides, News, & Discussion

In XDA-Developers every code builders finding solutions for Mate 9 but there is nothing for Mate 9 Pro (LON) versions.
I am opening this thread if someone give a hand to resolve downgrading problem Oreo Beta to Offical Nougat.
In Mate 9 forum @mankindtw build HWOTA 8 solution for MHA versions. Probably people will suggest me to use FunkyHuawei thing. But PayPal and BitCoin payment methods are not working in my country because of acredition at banking system.
So if any developer can support M9 Pro, it's too much appriciated for me.

I'm using HiSuite v: 5.0.2.301_ove LON-L298.0.0.323(C432log), I signed up to the beta program and got my update through the beta app.
In Hisuite I can select "system update" and from there select "Switch To Other Version" and from there I can select LON-L29432B226(Official)
I have't done the actual "downgrade" because I don't want to reinstall apps and reconfigure them.
I don't have root or custom recovery because I updated to the beta before installing custom recovery and there is no method, that I know of, of installing custom recovery onto Oreo as of yet.

Waiting for it too! Need to update from B302 to B323 (C636)

Related

[SOLVED]After update to EMUI 9.0 my google services don't work!

Hi.
I have Chinese version of Honor 8x.
After update to EMUI 9 I can't use google apps.
GSM installer and factory reset don't work.
Some advice?
I can't downgrade by HiSuite.
I can't unlock my bootloader.
I was writing with Chinese support but they said that migration from 9.0 to 8.0 is impossible.
Even project microG doesn't work.
[SOLUTION]
I fixed the problem.
HiSuite from Chinese website.
OpenVPN software.
Chinese VPN, I found some with uncle Google.
Then I could see "choose other" and rollback to EMUI 8.
Have FUN!
I'm facing the same problem ?
In addition to that It's impossible to rollback to Oreo
Honor 8x emui 9 China
I have faced the same problem.....waiting for a solution ASAP.
I did research and I know that google framework, calendar and contacts sync , store are OK, but I have problem with signatures of google play services.
That's why I can't sign in to my google account and use google apps.
What can I do with that?
I face the very same problem.
rebooth doesn't work
factory reset either
safe mode doesnt work
Why doesn't this happen to all honor 8x but only a few?
codedz said:
I'm facing the same problem ?
In addition to that It's impossible to rollback to Oreo
Click to expand...
Click to collapse
You can roll back using latest hisuit?
rakib1129 said:
You can roll back using latest hisuit?
Click to expand...
Click to collapse
Believe me, I tried it using the last version of HiSuite (9.0.3.300_OVE) but older versions tab is not showing
codedz said:
Believe me, I tried it using the last version of HiSuite (9.0.3.300_OVE) but older versions tab is not showing
Click to expand...
Click to collapse
Exactly, Hisuite doesn't ive the option to go back sadly ...
codedz said:
Believe me, I tried it using the last version of HiSuite (9.0.3.300_OVE) but older versions tab is not showing
Click to expand...
Click to collapse
Use vpn asia pacific(bangladesh,india,china).Then run hisuit.
rakib1129 said:
Use vpn asia pacific(bangladesh,india,china).Then run hisuit.
Click to expand...
Click to collapse
I tried with several VPN providers but it does not change anything
Thank you
The same for me, VPN doesn't help...
Oh thank you it's working and without a VPN !!!
You just have to download HiSuite from the chinese website
codedz said:
Oh thank you it's working and without a VPN !!!
You just have to download HiSuite from the chinese website
Click to expand...
Click to collapse
I tried yesterday without VPN and it didn't work.
Probably Chinese friends have changed something.
moczu17 said:
Hi.
I have Chinese version of Honor 8x.
After update to EMUI 9 I can't use google apps.
GSM installer and factory reset don't work.
Some advice?
I can't downgrade by HiSuite.
I can't unlock my bootloader.
I was writing with Chinese support but they said that migration from 9.0 to 8.0 is impossible.
Even project microG doesn't work.
[SOLUTION]
I fixed the problem.
HiSuite from Chinese website.
OpenVPN software.
Chinese VPN, I found some with uncle Google.
Then I could see "choose other" and rollback to EMUI 8.
Have FUN!
Click to expand...
Click to collapse
I went back to EMUI 8.2 but i face the same problem! .... google apps can't open ??? did it happen to you guys`?
moczu17 said:
Hi.
I have Chinese version of Honor 8x.
After update to EMUI 9 I can't use google apps.
GSM installer and factory reset don't work.
Some advice?
I can't downgrade by HiSuite.
I can't unlock my bootloader.
I was writing with Chinese support but they said that migration from 9.0 to 8.0 is impossible.
Even project microG doesn't work.
[SOLUTION]
I fixed the problem.
HiSuite from Chinese website.
OpenVPN software.
Chinese VPN, I found some with uncle Google.
Then I could see "choose other" and rollback to EMUI 8.
Have FUN!
Click to expand...
Click to collapse
Goto device settings->Apps & Notification->Apps->Google Play Services->Storage->Clear cache & clear data.
moczu17 said:
Hi.
I have Chinese version of Honor 8x.
After update to EMUI 9 I can't use google apps.
GSM installer and factory reset don't work.
Some advice?
I can't downgrade by HiSuite.
I can't unlock my bootloader.
I was writing with Chinese support but they said that migration from 9.0 to 8.0 is impossible.
Even project microG doesn't work.
[SOLUTION]
I fixed the problem.
HiSuite from Chinese website.
OpenVPN software.
Chinese VPN, I found some with uncle Google.
Then I could see "choose other" and rollback to EMUI 8.
Have FUN!
Click to expand...
Click to collapse
Roll back isn’t a solution. Please remove 'solved' mark from post.
rakib1129 said:
Roll back isn’t a solution. Please remove 'solved' mark from post.
Click to expand...
Click to collapse
Of course after rolling back install GMSSanzhuangqu installer and Google installer 3.0!
Don't forget!
moczu17 said:
Of course after rolling back install GMSSanzhuangqu installer and Google installer 3.0!
Don't forget!
Click to expand...
Click to collapse
I know. But we honor 8x user need google services in emui 9 version. That's why we need a fix for that.Don’t mind.
moczu17 said:
Hi.
I have Chinese version of Honor 8x.
After update to EMUI 9 I can't use google apps.
GSM installer and factory reset don't work.
Some advice?
I can't downgrade by HiSuite.
I can't unlock my bootloader.
I was writing with Chinese support but they said that migration from 9.0 to 8.0 is impossible.
Even project microG doesn't work.
[SOLUTION]
I fixed the problem.
HiSuite from Chinese website.
OpenVPN software.
Chinese VPN, I found some with uncle Google.
Then I could see "choose other" and rollback to EMUI 8.
Have FUN!
Click to expand...
Click to collapse
Hello everyone one. Somebody Help me pls
2 days ago I updated my honor 8x(jsn-l22) to android 9 and it was awful. I didn't like so I decided to downgrade to 8.1. I used hisuite to downgrade but the speed of downloading was really bad so I couldn't do it. So I gave it to someone to do it. He flashed the official (8.1.0 oreo) with some tool and when the flashing operation was in 99% it faced with an error user data part. And now my phone is running Android 8.1 but not correctly. The build number is changed to this
(chipset-miamic20 8.2.0.001(00X4)) and system UI is totally different and I don't know what to do now.
We tried to flash other versions but actually nothing is able to be flashed. It comes with error even at the first step of flashing. Every ROM we tried flashing all were unsuccessful and came with error.
Please if there is any way to fix this problem, let me know
The phone is stocked in this ROM.
Here is a screen shot of about device. I'm really disappointed ?HELP PLEASE.
moczu17 said:
Hi.
I have Chinese version of Honor 8x.
After update to EMUI 9 I can't use google apps.
GSM installer and factory reset don't work.
Some advice?
I can't downgrade by HiSuite.
I can't unlock my bootloader.
I was writing with Chinese support but they said that migration from 9.0 to 8.0 is impossible.
Even project microG doesn't work.
[SOLUTION]
I fixed the problem.
HiSuite from Chinese website.
OpenVPN software.
Chinese VPN, I found some with uncle Google.
Then I could see "choose other" and rollback to EMUI 8.
Have FUN!
Click to expand...
Click to collapse
Is your google service working well?
Give me the link of chinees hisuit.

I'm still on RomAur on Emui 9.0.0.228

What is the latest firmware that I can use so that I can root with magisk without any problem? Sorry if this has already been mentioned but I do not want to brick my device because of a bad update..
My model is a C432
Thanks in advance for your reply ??
Thanks for the all the help you are too many lol
Sent from my HUAWEI LYA-L29 using XDA Labs
Well, there's still no software for our new poor "nobody cares about" filesystem EroFS, so we got no scripts to even repack archives of firmware. Essentially, everything is done by manual dump of partitions of firmware after installation on phone.
The most recent custom firmware I was able to find is KangVIP emui 9.1 based on Chinese b135 firmware. I haven't tried, but some people mentioned that it works.
https://club.huawei.com/thread-21161359-1-1.html
FYI, Huawei went further with their "user security experience" and in Emui 10 altogether removed bootloader unlock command, making it essentially impossible to get root there and dump partitions of already installed firmware. I think we're screwed and better forget about custom ROMs for emui 10+
https://forum.xda-developers.com/mate-20-pro/help/emui-10-bootloader-unlock-t4017851

How can I downgrade my Android 8.0 to 7.0? (Mate 10 lite)

Hey,
Altough I bet there are hunderds of threads like this, I decided to create another one
So because I have my mate 10 lite around 2 years (a bit less), I would like to get an upgrade. Sadly I won't get Android Pie officially, so I'd like to install a custom ROM.
To do that I need an unlocked bootloader which dc-unlocker is only able to do below Android 8.0.
So I would have to downgrade my Android 8.0 (Btw, EMUI is also 8.0) to Nougat 7.0.
The method through HiSuite didn't worked since it just says "Newest Developer Version installed", but nothing with "Switch to other versions".
Also through Firmeware Finder (Playstore App) it doesn't show me the option "In-App Proxy", so I guess it doesn't work either with that.
Is there another way to do, if so I would really appreciate any help
Thanks in advance
My Mate 8 also keeps on Android 8.0, without any update to Android Pie officially.
If the official utility, HiSuite, which is developed by Huawei doesn't work, we maybe have no way to downgrade the system software on Mate 10 or Mate 8.
xda_user883 said:
Hey,
Altough I bet there are hunderds of threads like this, I decided to create another one
So because I have my mate 10 lite around 2 years (a bit less), I would like to get an upgrade. Sadly I won't get Android Pie officially, so I'd like to install a custom ROM.
To do that I need an unlocked bootloader which dc-unlocker is only able to do below Android 8.0.
So I would have to downgrade my Android 8.0 (Btw, EMUI is also 8.0) to Nougat 7.0.
The method through HiSuite didn't worked since it just says "Newest Developer Version installed", but nothing with "Switch to other versions".
Also through Firmeware Finder (Playstore App) it doesn't show me the option "In-App Proxy", so I guess it doesn't work either with that.
Is there another way to do, if so I would really appreciate any help
Thanks in advance
Click to expand...
Click to collapse
James_Watson said:
My Mate 8 also keeps on Android 8.0, without any update to Android Pie officially.
If the official utility, HiSuite, which is developed by Huawei doesn't work, we maybe have no way to downgrade the system software on Mate 10 or Mate 8.
Click to expand...
Click to collapse
It all depends on your current build version. If I remember correctly the ability to use DC was patched in most custs in May or June. So if your security date is prior to May you can still use DC. If not you're out of luck. You can use testpoint to flash board software and then get unlock code through there, but it requires you to remove the back of your phone which will break IP rating and void warranty (If it's still under warranty)

Mate 10 Pro doesn't want to update, need help with HiSuite-Proxy

Hi, I currently have a Huawei Mate 10 Pro (BLA-L09) running Android 8 compilation OS 8.0.0.137(C605), I want to update to the latest version available (Android 10, EMUI 10) but when I go to the Update tab it says that is on the latest version. I want to use the HiSuite-Proxy metod to force the update but i need some help:
- I cannot find the update.dbankcdn.com files (Package URL, CUST PKG, Preloaded PKG) on the web for this phone, do you know where i can find them?
-Apparently if I want to install 10.0.0.xxx I need to install 9.0.0.xxx then 9.1.0.xxx first, so i need to install Android 9 first, is that correct?
Can I get some help? Thanks!
baichoc said:
Hi, I currently have a Huawei Mate 10 Pro (BLA-L09) running Android 8 compilation OS 8.0.0.137(C605), I want to update to the latest version available (Android 10, EMUI 10) but when I go to the Update tab it says that is on the latest version. I want to use the HiSuite-Proxy metod to force the update but i need some help:
- I cannot find the update.dbankcdn.com files (Package URL, CUST PKG, Preloaded PKG) on the web for this phone, do you know where i can find them?
-Apparently if I want to install 10.0.0.xxx I need to install 9.0.0.xxx then 9.1.0.xxx first, so i need to install Android 9 first, is that correct?
Can I get some help? Thanks!
Click to expand...
Click to collapse
[URLS] Keeping Track Of EMUI 10
So as some of you might know, Huawei has officially announced that EMUI 10 is going to rollout early/mid/late June, I've built a quick app which lists the latest EMUI 10 uploads of Huawei, I'm going to post them here so we could stalk on what...
forum.xda-developers.com
需要恢复官方系统并使用华为移动助手进行升级
Hello, I have the BLA-L29 9.0.0.197(C432E4R1P11) than I received via OTA the .246 .From that no more even if Huawei approved and pushed OTA till 10.0 (C432). If I downgrade to 9.0 (C432) and not (C432E4R1P11) can I update till 10.0 ?
Hi everyone.

[Solved] Unable to unlock bootloader with ANE-LX1

Hello, i've just got a Huawei P20 Lite ANE-LX1 with EMUI 9.1.0.381 from a friend. It's my first Huawei and since i am usually running my phones with custom roms, i want to install a custom rom to it. Usually i am trying to get phones that have a reasonable unlock process but this was a gift and i thought it should be possible to install something anyways.
After spending hours into this and reading allot of posts on this forum, i am not eager to open up the hardware and go this potatoe way. I've watches some Youtube videos about the process and i am not sure, if i can manage to get the phone back together. So i was trying the other way with downgrading EMUI to 8 using dload method in order to run dc-unlocker. But somehow i am unable to do so. I am always ending up with "incompatibility with current version" error. I've tried using the dailer code menu, as well as the 3 buttons method. It's not working at all. I've tried multiple versions from androidhost.ru for this phone. There were no options to downgrade to any prior version using HiSuite as well.
Can someone help me to unlock the bootloader for my phone?
rugar said:
There were no options to downgrade to any prior version using HiSuite as well.
Click to expand...
Click to collapse
If the rollback option is not available with your HiSuite ("switch to the older version" or "Earlier version"), you must downgrade to the lower EMUI 9 build version number doing the dload method (flashing Service ROM ). What is your region? (Cxxx in build number).
Btw, it's impossible to downgrade to the lower EMUI version via dload method.
Hello, thanks for your reply. My current build number is C432E7R1P7. I think i figured that i should use C432 versions but i haven't thought about using another 9.x version and instead go straight to 8.x. Is any lower 9.x version ok?
rugar said:
Hello, thanks for your reply. My current build number is C432E7R1P7. I think i figured that i should use C432 versions but i haven't thought about using another 9.x version and instead go straight to 8.x. Is any lower 9.x version ok?
Click to expand...
Click to collapse
Try .132 ,
Link
Then try downgrade via HiSuite, use chinese version:
Link
-Alf- said:
Try .132 ,
Link
Then try downgrade via HiSuite, use chinese version:
Link
Click to expand...
Click to collapse
On EMUI 8 (in order to run dc-unlocker) you need downgrade to .126:
Link
With .126 you should be able to use dc or hcu-client .
Thanks, you've helped me allot! I've got it working and have the bootloader unlocked. Going forward, i was reading your LOS 17/18 thread. I could add a comment there but since we are writing here now, i am going to ask here:
I am still with EMUI 8. Is it actually needed to install another version of EMUI in order to install LineageOS? Isn't it possible to just install TWRP and go on from there?
rugar said:
Thanks, you've helped me allot! I've got it working and have the bootloader unlocked. Going forward, i was reading your LOS 17/18 thread. I could add a comment there but since we are writing here now, i am going to ask here:
I am still with EMUI 8. Is it actually needed to install another version of EMUI in order to install LineageOS? Isn't it possible to just install TWRP and go on from there?
Click to expand...
Click to collapse
LOS/LiR requires emui 9.1. Do not install the latest version, flash 9.1.0.200 via dload.
Finally made it and finished installing LOS. Thanks again for your help. I've marked the thread as solved.
No problem .

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