[MHA-L29C185] Downgrade to Nougat ? - Huawei Mate 9 Guides, News, & Discussion

Hello guys,
I recently updated my perfectly working MHA-L29C185 from Nougat (B172) to Oreo (B372) and it's a complete disaster. The device is now slow as hell and is heating like crazy, even if I just use it to make a call or browse on the internet with Chrome. I tried everything (factory reset, changing resolution...etc) but nothing worked and the device just keep being slow.
Is there a way to downgrade from Oreo to Nougat ? I found a few tutorials, but none of them was for my region (C185 aka Middle-East).
Thanks a lot !

Related

Note4 SM-910G Downgrade to Marsh 6.0.0 from 6.0.1

Hi
I did the update to marshmallow when i was available with my carrier a few months back and everything was ok, it then did an auto update to 6.0.1 and since then been going slow and all FB app / messenger and pages manager wont work.
Ive scoured the world to find solutions and tried the suggestions and also went and backed up my phone (not apps) then wiped it to factory and it still is the same.
I was wondering if there is a way i can downgrade Marsh to the one before the upgrade to 6.0.1 or if there is a way back to the latest lollipop or even better a version of cyanogenmod for the nougat i can try.
(i have put on custom roms before on other phones and know my way around)
Thanks
all
Stu (Australia Optus OPS)

C9000 Nougat Issue's Fingerprint,Sound,Screen Flickering etc

C9000 C9 Pro Nougat C9000ZHU1BQL3 has many issues since i have updated C9 pro Marshmallow to Nougat I'm getting too many issues Fingerprint is very slow brightness issue screen flickering and and sound issue when i connect my mobile to speakers so sounds is very low i also tried to increase sound in setting but its slow fast charging only working when i use original cable in a Marshmallow fast charging works on every cable if we compare Nougat to Marshmallow so Marshmallow had not these types of issues I'm going to downgrade on Marshmallow
Yes same here many bug's in it ? I'm waiting for new software update
These issues was in Indian firmware too and also in Hong Kong firmware I am using C9000ZHU1AQG2 marshmallow because of this ?
I was getting same issues M rom better than N rom
After update to N. my fingerprint speed increased and work perfectly !
I think c9 pro camera can be better with software update apps like (b612 or retrica ...) take pictures better than samsung camera
Everything is true all of your points are right ?? don't know what's Samsung C9 pro community doing with us ?? there are android Oreo released and rolling out for 4 gb 6 gb ram mobiles and we are just getting issues bug's in Nougat and that too much after that time we got the Nougat software update ?
C9 Pro will get android oreo with galaxy s8
The combination of Samsung Galaxy C9 Pro with Android O would be a great one. Latest Android is equipped with many latest features some of which are
Improvements in connectivity
.Better security and feature enhancements
.The Picture in Picture mode
.Webview improvements
.New Keyboard features
.More adaptive icons
.Better gesture control.
Just wait for release it !
Neither nougat is perfect nor Oreo will be perfect for c9 pro like too many bugs are in nougat this time, so this is a difference between Samsung local devices and Samsung famous devices, although from Galaxy note 5 and S6 to Note 8 Nougat firmware is perfect everything works good sound, brightness, screen resolution, fingerprint, fast-charging etc everything works perfect, the Nougat was released in 22 August 2016 for devices but Samsung community made a nougat firmware for c9 pro in December 2017 with the too many bug's and the Oreo was released in 21 august 2017 and we are still waiting for it everyone is using oreo ?? and we are just using Marshmallow to avoid the Nougat bug's ? like this everyone using official twrp for their mobiles and twrp works fine for their mobiles, and we are still getting error issues in twrp mount data failed backup rom failed restore rom failed WTF ?? now I will consider to sale out C9 ?
Am i right @travis82
Shozaf.shah said:
Neither nougat is perfect nor Oreo will be perfect for c9 pro like too many bugs are in nougat this time, so this is a difference between Samsung local devices and Samsung famous devices, although from Galaxy note 5 and S6 to Note 8 Nougat firmware is perfect everything works good sound, brightness, screen resolution, fingerprint, fast-charging etc everything works perfect, the Nougat was released in 22 August 2016 for devices but Samsung community made a nougat firmware for c9 pro in December 2017 with the too many bug's and the Oreo was released in 21 august 2017 and we are still waiting for it everyone is using oreo and we are just using Marshmallow to avoid the Nougat bug's like this everyone using official twrp for their mobiles and twrp works fine for their mobiles, and we are still getting error issues in twrp mount data failed backup rom failed restore rom failed WTF now I will consider to sale out C9
Am i right @travis82
Click to expand...
Click to collapse
twrp is perfect here, just format data to remove encryption that go's for ALL samsung devices. Myself and AL been testing a rom and kernel i did and get 10hrs sot so I'd keep it. Fast charge and fingerprint are working on my kernel too.
Decision is yours mate.
Regards,
Travis Mills
travis82 said:
twrp is perfect here, just format data to remove encryption that go's for ALL samsung devices. Myself and AL been testing a rom and kernel i did and get 10hrs sot so I'd keep it. Fast charge and fingerprint are working on my kernel too.
Decision is yours mate.
Regards,
Travis Mills
Click to expand...
Click to collapse
I flashed the rom then flashed the twrp which u have updated then i have formated data twice then flash supersu even then mount data didn't work then i wanted to make backup of my rom at the time of end 100 % it said backup failed mount data also didn't work if we can't make backup so also we can't restore backup because of backup failed, now we talk about your N rom which you have ported from indian rom C900F i flashed it 3 times every time its drained the battery when i restart me my mobile its drain the battery 10% means 100 to 90 and 90 to 80 in every restart its drain 10% fingerprint works fine but its also shows Screen Flickering like HK stock N i mean brightness issue and if we compare sound volume Booster so Marshmallow rom sound is too high when i connect to my mobile to speakers or earphones etc and N rom volume is too slow and like this this time I'm using Marshmallow rom and i put the other cable in fast charger so its getting charge fast like we use original cable i mean we can use every cable to fast charging in Marshmallow but in Nougat rom if we want fast-charging so we have to put original cable i like Nougat features but because of these issues bug's I'm using Marshmallow rom my friends has Samsung mobiles like s6 edge s8 note series etc they use Nougat rom in their mobiles they doesn't have these types of issues but in C9 pro has these issues ?? i can bear screen Flickering issue fingerprint slow issue but i can't bear slow sound issue i want sound like Marshmallow in nougat because i listen songs in speakers by my mobile and also i can't bear fast-charging issue because i didn't use original cable because its too small i use other cable ??
@travis82 is there any way to boost volume i mean to boost earphones or external speakers volume..? Can we take Any sound/volume file from Marshmallow and replace it in nougat rom..? Or what about mixer_path.xml ..? I want to boost external speakers sound..?
Screen flickering
Screen flickering started after the update.... It's hardware issue... I guess... After rolling back still persist.
Laleka said:
Screen flickering started after the update.... It's hardware issue... I guess... After rolling back still persist.
Click to expand...
Click to collapse
Its all Issues are in Nougat firmware i have downgraded on Marshmallow no sound issue no fast-charging issue no flickering issue everything working fine
Shozaf.shah said:
Its all Issues are in Nougat firmware i have downgraded on Marshmallow no sound issue no fast-charging issue no flickering issue everything working fine
Click to expand...
Click to collapse
I downgraded too but screen still flickers...?
hey god ! the time was good with nokia.... just incomming and outgoing !!!
Hi. I noticed few days ago that my screee flickers when is on minimum brightes and because I use the phone as e-book that is a big problem. I'm more worried if it's a hardware or software problem. I soooo hope is software. Any development or info about it...? Fix? So far the only problem with the update.
Shozaf.shah said:
C9000 C9 Pro Nougat C9000ZHU1BQL3 has many issues since i have updated C9 pro Marshmallow to Nougat I'm getting too many issues Fingerprint is very slow brightness issue screen flickering and and sound issue when i connect my mobile to speakers so sounds is very low i also tried to increase sound in setting but its slow fast charging only working when i use original cable in a Marshmallow fast charging works on every cable if we compare Nougat to Marshmallow so Marshmallow had not these types of issues I'm going to downgrade on Marshmallow
Click to expand...
Click to collapse
I'm also having problems that i didnt have before the update. For example, sometimes the refresh rate of screen suddenly drops from 60 Hz to about 30 Hz when doing basic tasks like navigating the system ui. Another one is when the sound and video on screen loose sync, and the only fix is to restart the phone. Moreover, out of the blue, the phones many phone calls. As a result, ill have to clean the cache of the phone app before using it again. Finally, I was hoping that the camera software got enhanced. Low light are just………bad, very bad. Low light shots are grainy af. In addition, even in normal light, like in a cafe or inside a house, the image quality deteriorates quickly. This is why i want to replace it with the honor 10 especially if the oreo update is far away or not happening. What do you think?
C9 Pro Oreo Update Issue.
Hi,
I have C9 Pro Hong Kong version, yesterday I was checking for software update and I was happy to see that Oreo update build number:C9000ZHU1CRG9 was available so I updated my C9 Pro.But since than I am facing issues as many applications like Twitter, LinkedIn,Email, Messages etc are not working whenever I open these applications error message and application stops.
I am wondering when I contacted to Samsung Agent in Hong Kong via Samsung contact live chat he told me that Samsung Hong Kong still have Nougat for C9 Pro so I am astonished that how this update arrived for my mobile when official is saying that no update yet is available for C9 Pro.
Please help me to resolve this issue.
Regards,
I look forward to hearing from you soon.
Arbabpk2000 said:
Hi,
I have C9 Pro Hong Kong version, yesterday I was checking for software update and I was happy to see that Oreo update build number:C9000ZHU1CRG9 was available so I updated my C9 Pro.But since than I am facing issues as many applications like Twitter, LinkedIn,Email, Messages etc are not working whenever I open these applications error message and application stops.
I am wondering when I contacted to Samsung Agent in Hong Kong via Samsung contact live chat he told me that Samsung Hong Kong still have Nougat for C9 Pro so I am astonished that how this update arrived for my mobile when official is saying that no update yet is available for C9 Pro.
Please help me to resolve this issue.
Regards,
I look forward to hearing from you soon.
Click to expand...
Click to collapse
Just download the oreo firmware from sammobile.com then flash it by odin every problem will be solve, what you are talking about, you updated oreo by WiFi so that's why u are facing these problems..
I live in United States and saw that my C9000 was trying to install the Oreo update.
SM-C9000 Pro

Zte a2017gv1.0.0b11

Hi everyone !
i have many issues and limitations on my ZTE Axon 7 like battery drain and problems to connect with google account, remove or change it etc. Basically I'm not allowed to do anything telling me I dont have admin rights.. I tried already many solutions to sort these issues but none worked. Even if I do a factory reset I will still encounter same issues. I have european version of the phone I'm on build number ZTE A2017GV1.0.0B11, MIFavor UI 4.0, Android 6.0.1, Kernel 3.18.20 and I want to upgrade it to B35 or a much more recent version. The update in the settings is telling me 'software up to date' so cant do it automatically.
Which version would you advise to have the most efficient and less limitative interface (maybe even avoid overlayers from zte) ? could you help me explaning how to choose and do an upgrade with all detailed steps? also I am wondering if any problem with upgrading and my phone doesnt work can I do a factory reset or nothing and do I lose the warranty doing so? I am looking for most simple way to do so (for a newbie)
thanks a lot !
Download the A2017G B08 Nougat ROM, put the update.zip in the root of SD and use the system update app. From that ROM there is a new Nougat B10 update as a precursor to updating to Oreo soon.
yann360 said:
Hi everyone !
i have many issues and limitations on my ZTE Axon 7 like battery drain and problems to connect with google account, remove or change it etc. Basically I'm not allowed to do anything telling me I dont have admin rights.. I tried already many solutions to sort these issues but none worked. Even if I do a factory reset I will still encounter same issues. I have european version of the phone I'm on build number ZTE A2017GV1.0.0B11, MIFavor UI 4.0, Android 6.0.1, Kernel 3.18.20 and I want to upgrade it to B35 or a much more recent version. The update in the settings is telling me 'software up to date' so cant do it automatically.
Which version would you advise to have the most efficient and less limitative interface (maybe even avoid overlayers from zte) ? could you help me explaning how to choose and do an upgrade with all detailed steps? also I am wondering if any problem with upgrading and my phone doesnt work can I do a factory reset or nothing and do I lose the warranty doing so? I am looking for most simple way to do so (for a newbie)
thanks a lot !
Click to expand...
Click to collapse
B35 is US. You have to use B08 or 09. But yeah, just update to B08
The Nougat V1.2.0B10 just released. You may get it from the ZTE Germany page.
@ko_wei13 is it compatible to update from ZTE A2017G V1.0.0B11 to V1.2.0B10 ? if I download it from the german website can I set any language after update?
@RobboW on which website can I find / download right package of the A2017G B08 Nougat ROM compatible with my build version?
yann360 said:
@ko_wei13 is it compatible to update from ZTE A2017G V1.0.0B11 to V1.2.0B10 ? if I download it from the german website can I set any language after update?
Click to expand...
Click to collapse
http://www.ztemobile.de/support/downloads/?product_id=2100
Yes, minimum requirement to update to Nougat is V1.0.0B11. So you can download the file and place it under the root directory of your phone storage and the system update will automatically detect it.
For language, there is no issue for you to change it as the ROM is for global, not limit to German.
I flashed it on my G. Had a couple of glitches but mostly ok. They say you should do a major update after a factory reset. I didn't but the glitches were minor and it seems to be working ok now.
thanks worked great !
@yann360,
Hi,
Yeah, you can set most language in your phone. You can upgrade your phone via SD card.
Thanks!

Oreo upate bugs

Hi guys,
Recieved the update today, but now my phone is weird: Snapchat isnt working anymore, my wifi is really slow too. Made a reset of the phone, but still the same...
Any ideas ?

Simcard not recognized after downgrading from Pie to Nougat or Oreo

Hi all,
I’d would really appreciate some comments or suggestions on how to solve following problem.
I bought an Essential phone on ebay this week (Sprint “unlocked”), and it came with Android 9 Pie. I initially put a simcard from an operator here in my country and it worked fine.
Due to work reasons I need the phone to be rooted with Android 7.1.1 Nougat (compatibility issue with a software used for testing celullar networks), so as a first step I flashed one of the Nougat images available in Essential’s website. This wasn’t a problem since I had already done this procedure with other Essential phones.
After successfully flashing Nougat, when I inserted back the simcard the phone did not recognize it. I upgraded back to 9.0, and the simcard was working again. The same happened when I downgraded to Oreo for testing.
Does anyone have any suggestions on how could I proceed to solve this issue? I really need it to run Nougat.
Thank you in advance for your feedback!
Make sure you unlocked the critical partitions, that's needed for the full image to flash and produce a fully functioning device, else there may be incompatibilities in the radio/modem/hardware/bootloader.
lecc18 said:
Hi all,
I’d would really appreciate some comments or suggestions on how to solve following problem.
I bought an Essential phone on ebay this week (Sprint “unlocked”), and it came with Android 9 Pie. I initially put a simcard from an operator here in my country and it worked fine.
Due to work reasons I need the phone to be rooted with Android 7.1.1 Nougat (compatibility issue with a software used for testing celullar networks), so as a first step I flashed one of the Nougat images available in Essential’s website. This wasn’t a problem since I had already done this procedure with other Essential phones.
After successfully flashing Nougat, when I inserted back the simcard the phone did not recognize it. I upgraded back to 9.0, and the simcard was working again. The same happened when I downgraded to Oreo for testing.
Does anyone have any suggestions on how could I proceed to solve this issue? I really need it to run Nougat.
Thank you in advance for your feedback!
Click to expand...
Click to collapse
You need to do a full wipe of the data when going backwards.
There is some setting hanging around that is not compatible.
I have seen this also

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