[Mate 8 Q&A, Help & Troubleshooting] Samavb:
Rollback from Huawei Mate 8 - Nougat to Stock

You need rollback package to get it back to normal.

Since your model is L29 & you are nougat.

Go to this site http://consumer.huawei.com/sg/support/products/downloads/detail/mate-8-sg.htm?id=91647

Download the file

Extract the update.app

Make a folder on your sdcard and name it as dload

put this update.app in that sdcard

now you do the dload method

you can do it two ways

one way is

the 3 finger rule while bootup

just press volume + volume - power button together and hold until you see EMUI verifying package

then release your fingers

it will rollback to marshmallow

now you have to update it to another stock firmware (marshmallow)

remember at this point it is in global firmware it might show build number as C900 or something.

you can check it in the settings - about -> build number

you have to then update it to your model firmware

L29C185BXX

I found the stock firmware from another thread for your model

This is L29C185B200

http://update.hicloud.com:8180/TDS/data/files/p3/s15/G1076/g104/v65326/f1/full/update.zip

once again

download the file,

extract the update.app &

then put the update.app in dload folder on your sdcard

and then do dload method.

second way of dload is

open dialer

type *#*#2846579#*#*

click on "software upgrade"

and then -> SDcard upgrade

follow the instructions on the screen

and it will finish the dload method in next few minutes.

That's it. now you will be on Stock ROM with fully functional OS.

after this you will either get OTA updates or you can download using HiCare

or you can download the stock firmware from another thread

or

you can use firmware finder to get stock firmware for your phone. Get the latest version.

If you finish all these steps then I will tell you how to get to nougat if you have any trouble

Hope you find this information useful.

Lot of effort goes into typing these posts. Please don't forget to click on :good::good::good::good::good: for my posts.

---------- Post added 29th April 2017 at 12:11 AM ---------- Previous post was 28th April 2017 at 11:27 PM ----------

You are rooted & if I read correctly you also have TWRP installed.

If you are unlocked, rooted & have TWRP - then you can install custom roms.

but if you want stock roms, - you need Stock ROM, Stock Recovery, Locked bootloader.

First you need the rollback package from EMUI4.1 to EMI 4.0 for L29C432 is below

https://www.hidrive.strato.com/lnk/0mlDFqqy

Rollback package for L29 to downgrade from EMUI 5.0 to EMUI 4.0 marshmallow is

http://consumer.huawei.com/sg/support/products/downloads/detail/mate-8-sg.htm?id=91647

So choose the right version based on the firmware you are having on your phone. If you have nougat choose the second link and if you have any other version then choose the first link.

Download the file, extract the update.app

then you have to do dload method

create a folder named dload and put update.app in sd card

then

go to dialer

press *#*#2846579#*#*

select

sdcard upgrade

and then say yes

that's it

you will come back to stock (global) version. build version will be C900BXX

now you need stock firmware for L29C432

you can download the stock firmware from here. Below tis the link for L29C432B180

http://update.hicloud.com:8180/TDS/data/files/p3/s15/G1076/g104/v51244/f1/full/update.zip

Stock firmware for L29C432B192

http://update.hicloud.com:8180/TDS/data/files/p3/s15/G1076/g104/v63059/f1/full/update.zip

Here you have the option to either go for L29C432B180 or L29C432B192. (if you choose B192, then you will save time and reduce few steps, because you will get system update to B560 immediately once you change the region to Ireland in Hicare app)

do the dload method again

extract the file, put the file in dload folder in sdcard ,

either use dialer or use 3 button rule to finish the dload process

now you are on L29C432B180. / L29C432B192

From here you can use another dload method to go to B192 - > system update (OTA) -> B560 or B580

if you get a blank screen - > do factory reset

if you get "verification failed " in red color - > unlock bootloader again and proceed with the steps.

This rollback package will save you in case of any problems.

Once you go to nougat B560

you can update to Kangvip B577 - pre rooted rom - its awesome - Root stable , excellent battery lfie. - everything is working perfectly.

I will give you those steps and links if you succeed in getting to B560 after all these steps.

I am sorry that this is a very long post and many steps but I can assure you that it is worth.

Ultimately you will get to nougat & with full root using Kangvip B577.

Hope you succeed

Lot of effort goes into typing these posts. Please don't forget to click on :good::good::good::good::good: for my posts. it encourages me to help more and answer more Qs