What is the safe way to downgrade from emui 9.1? - Huawei Mate 9 Questions & Answers

Hello every one
My mate 9 phone works in good condition since 2 years ago.
Since my last update to emui 9.1 the camera do not work like before.
I need the safe way to return back for emiui9 or emui oreo I do not care
My concern is camera only
I do not care also for Gpu turbu
My phone model mate 9 emui 9. 1 C185E8R1P8 dual sim
Can any help me?

Via Huawei Hisuite I returned Back to Emui 9.0
Then I returned to Emui 8

Related

Can i rebrand mate 9 while on Oreo

Hello guys,
I have mate 9 C636 B362 oreo.
The problem is am now living in europe
Which makes my phone unable to get updates through default system update and very slow to updates to go through firmwarefinder
My question is can i rebrand the mate 9 while I am already on Oreo to c432
Thanks
it is workable on Funky Huawei, but the price is quite expensive.
i've sucked on engineer mode when I rebranded china oreo version to European version, i was sure i turned off the FRP function, but when i finished rebrading , the FRP changed to lock status. i searched lots of way on website but not workable.
the final solution is use Funky Huawei with paid, it is quite easy but need money
I had the same issue with my mate 9 C185 region on Oreo not getting it's in UK. I used hisuite to rollback to nougat. Connect to PC and run hisuite update. It tells you you are on latest firmware but tab asks if you want to install previous stable firmware. This fully resets phone back to nougat - so do a backup. Once on nougat you can rebrand to c432 using hwota method. You will need to get bootloader code from Huawei first. This worked for me anyway.

How to revert back to stock if Mate 9 with Root

Hello, I don't find a way to upgrade my system from N to O. I have a rooted Mate 9 with TRWP installed and since I can't factory reset my device is there a way to put my phone back to stock?
read that pinned guide.
btw I rollback to 7.0 after 3 weeks of use, oreo just suck so bad....

BootLoader unlock Problem

I`ve a couple of questions regarding the whole boot-loader unlocking fiasco as Huawei will stop the official service from 22nd of july ,I`m currently on emui 5.0.2 on my BLN-L21 ,I`ve the following questions
1)I plan to install the GSI roms from Open Kirin but as they require the phone to be on EMUI 8 I cant do Anything right now ,so while I wait for the official release of EMUI 8 on honor 6x Can I generate Boot Unlock code now and then use it later?
2)Also on the official boot loader unlocking page it asks "Before EMUI" OR "Since EMUI" what option do I choose? As the phone launched with Emui 4.1? Thanks
1 You should be able to use it later.
2 Since EMUI
0xcafebabe said:
1 You should be able to use it later.
2 Since EMUI
Click to expand...
Click to collapse
Sorry I forgot to put the fact it asks Since EMUI 5 or Before EMUI 5 ,I`m confused over the fact that the phone launched with emui 4.1 and now has emui 5

How to get from nougat/Emui 5 to Pi?

So my phone is downloading L09C34B171, I just got it 2nd hand and unlocked the bootloader.
I've seen some conflicting things on using emui 8 or 9, I want to install a rom like lineage or RRv7 with magisk but apparently i need to flash everything from emui 8, so will my phone be updated to this before going to the emui 9.1?
thanks for any advice, keen to get some sweet custom OS so emui can go away.
I believe you need to have a phone on PIE to use RRv7. I flashed RRv7 to my Xiaomi Mi 8 lite and it's so much better than what was on it before. I just flashed PIE on my mate 9 yesterday and it's great. Read the thread below and you'll see how me and another guy did it. My bootloader is still unlocked so I imagine I can just flash twrp for PIE and then flash RRv7 which I'm thinking about doing. Not sure that I see that much difference is 8.0 and 9.0 but it runs fine.
https://forum.xda-developers.com/mate-9/help/usa-mate-9-users-emui-9-pie-9-t3932696

Upgrade Mate 9 (MHA-L29 C636 EMUI 5.0 Android 7.0)

I'm in the United States and need VoLTE to continue using this phone. I'm relatively new at doing this so please try to take that into account.
I've tried DLOAD method for 9.0.1.193 (C636E7R1P8T8) & 9.1.0.252 (C432E7R1P8T8). I got a message both times about the update not compatible with current firmware.
I'm guessing that I need to update to Android 8.0 before trying 9.0 but I'm not sure. I would appreciate specific instructions on how to upgrade this phone if it's possible.
My wife also has a Mate 9 MHA-L29. But it is a C567 and has Android 8.0. I haven't tried to upgrade her phone. But I need VoLTE capability for it too.

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