Downgrade Huawei p8 - Huawei P8 Questions & Answers

i have huawei p8 model number GRACE GRA-C900B370 marshmallow and i have been trying to downgrade with no luck, the battery life is horrible on this android version.
i downloaded the OS and extracted the dload file and all and when it starts updating it doesn't go past 5%.
any help would be appreciated.

Apparently, 'great battery improvement' with the latest B380 (can update from B370): [Firmware][Leak]Huawei P8 B380 - GRA-L09C432B380
Have you tried it?

Hi, what have you decided to do in the end?
If you still want to downgrade, what have you tried so far? To which version & build number do you want to downgrade?
When you say "i downloaded the OS", which version & build number are you referring to & where did you download it from?

Related

Still stuck on software version B133

Hi Guys
I want to install Marshmallow on my Huawei P8 Lite (Single Sim). I need to have B171 installed to update.
However, I am still stuck on B133. When I try to get an update over the air, it says that I already have the latest software installed. First, I tried to do this with the updater. Then, I used HiSuite. They both give the same message: no update available.
Next, I tried to update manually, by using the update that I found via xdadevelopers (http : // www . carbontesla . com/2015/11/huawei-p8-lite-b171-android-5-0-lollipop-firmware/) but it fails to update after 15%.
Finally, I tried all of the above after a factory reset, but nothing worked.
Is there something else I can do?
Thanks in advance!
Look at your phone settings, then about the phone and look at the build number and model number, what values do you have there?
olrak said:
Look at your phone settings, then about the phone and look at the build number and model number, what values do you have there?
Click to expand...
Click to collapse
Build number: ALE-L21C432B133
Model Number: ALE-L21
You don't have the balong bug error. So try reverting to build B052, then you can maybe updated to B188
Instructions on how to downgrade you can find here
Step 2 you don't need to do and Step 3 and 4 you can do OTA with the huawei updater.
Follow instructions mentioned in below topic , then you will be on latest android 6.0
http://forum.xda-developers.com/p8lite/general/huawei-p8-lite-android-6-0-marshmallow-t3309796
Thank you for your answers.
All right folks!
If you encounter this problem as well on your device, do what Olrak and ettenleurtje have told in this thread. Downgrade to B052, then do an OTA upgrade to B170, followed by an OTA upgrade to B188. Then you have the latest OTA update, so you might decide to stop here. However, if you really want the Marshmallow Beta version, do the latest step in their guides as well.
Thank you both for helping me.

Huawei p8 lite update 6.0 emui 4.0 software install failed

Hello all I have a little problem on my phone p8 lite I want to install the version 6.0 emui 4.0 but he will not they give me ''software install failed''
About my phone :
ALE-L21C185B160
version 5.0.1
emui 3.1
dual sim
Help Me please !!!! :crying:
ZiKoO-99 said:
Hello all I have a little problem on my phone p8 lite I want to install the version 6.0 emui 4.0 but he will not they give me ''software install failed''
About my phone :
ALE-L21C185B160
version 5.0.1
emui 3.1
dual sim
Help Me please !!!! :crying:
Click to expand...
Click to collapse
We need more information. Where are you at now? (Bootloop, normal System, nothing at all?) And how did you install the update? (Local, OTA)
Remember, ALWAYS do a full backup before doing anything with your system, especially but not only, if it's not an OTA.
In my case install abort at about 10% and say that; it was because my phone was rooted!
you can solve opening supersu app, there is an option inside for remove and prepare for an other app.
But on the other hand I see your version ends ...160
check in the zip file that you have downloaded ; the pdf contains version you can update from.
In mine it says:
The following versions can be upgraded.
Versions can be upgraded
ALE-L21C432B525
ALE-L21C432B183
ALE-L21C432B171
ALE-L21C432B009
ciao
Bro check if you are using c432 version or c185, if c432 then it won't upgrade because your phone if c185 variant.
I am also running a c185 variant of phone and marshmallow is running awesome i updated from b160 to b524, now waiting for b550 update for this variant
ZiKoO-99 said:
Hello all I have a little problem on my phone p8 lite I want to install the version 6.0 emui 4.0 but he will not they give me ''software install failed''
About my phone :
ALE-L21C185B160
version 5.0.1
emui 3.1
dual sim
Help Me please !!!! :crying:
Click to expand...
Click to collapse
unroot your phone complitly und use orginal recovery!!!!
My huawei p8 lite phone ale-l21 c185b160 is telling system update failed
[email protected] said:
My huawei p8 lite phone ale-l21 c185b160 is telling system update failed
Click to expand...
Click to collapse
Are you rooted and have twrp recovery? If yes, then unroot completely and flash stock recovery...
After that, try updating it again..
Sent from my ALE-L21 using XDA-Developers mobile app

Big issue-L21-b160 to nougat with firmware finder

Hello friends,
Today I decided to upgrade my p9 lite dual sim to nougat. The build i was on was the L21-b160 and the updater showed no updates, so I downloaded the firmware finder app.
Since I am a bit new to this, I thought that the b161 would be a newer version of the b160, so i downloaded it with proxy. The update went fine. However, since then, I cannot install a newer ROM version. They all stop at 1% and say 'update failed'. At the moment, I am on VNS-L21C432B161. And ideas of how to install a nougat build?
Thank you all in advance.

Undo Rollback P9 lite?

About a year ago a did a rollback on my Huawei P9lite from Android 7.0 to 6.0. Now i want to update it back to the latest version available.
The phone won't do it automatically and I also can't find the right package online to do it manually. Does anyone have some advice on how to do this?
The current build is VNS-L31C900B160 (It also used to be C432 for europe instead of C900)
The phone hasn't been tampered with aside from the rollback.
Thanks in advance
Jenson

Undo Rollback P9 lite?

About a year ago a did a rollback on my Huawei P9lite from Android 7.0 to 6.0. Now i want to update it back to the latest version available.
The phone won't do it automatically and I also can't find the right package online to do it manually. Does anyone have some advice on how to do this?
The current build is VNS-L31C900B160 (It also used to be C432 for europe instead of C900)
The phone hasn't been tampered with aside from the rollback.
Thanks in advance
Jenson
Will a factory reset help? Or will I still be stuck on C900?

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