[Huawei Mate 9 Questions & Answers] HyperLurch667:
Thanks! / Some reports of trying around with Mate9

Hi Guys,

thanks so much, I was able get my device back running android with the help of this thread (I tried to install LineageOS which failed). I just want to share some information if someone is in a similar situation:

My setup:

- Mate9 dual sim EU starting with Android 7 Nougat as pre-installed on device

- Model number according to online shop where I bought it: 51090VQX

- Unlocked the bootloader via dc-unlocker for 4€ so I can use TWRP

- Tried to install LIneage16 with failed with error 7 (tried several hours), left with TWRP but without working OS

General information:

One can always put the device in fastboot mode by turning off, keeping vol-down pressed and inserting USB cable. Thus, one can always flash TWRP (if bootloader unlocked). Not all TWRP versions are working. Here my experience (might be different in other siuations):

- twrp-3.0.2-0-hi3660 NOT USE - USB BROKEN

- twrp-3.0.3-1-hi3660.img OK

- twrp-3.1.1-0-hi3660.img OK

- twrp_recovery_for_Mate9_from_Micky387 DOES NOT WORK.img

- twrp_mate9_0.1__TWRP3.2.1 DOES NOT WORK.img

I experienced 3 ways to get a stock rom back:

====================

(1) Tried to get any android running at all - ended up with android 5.

Using dload folder on SD as described in the third post of this thread (the thread you are reading)

https://xdaforums.com/mate-9/help/help-wiped-products-vendo-bootloop-t3534594

"If your Model is MHA-L29 you can try this.

Load and Exract to SD card .

Push Power button and vol+/vol- to recovery mode.

I think it can help you. (Sorry, my english isn't good)

drive.google.com/open?id=0B9GG_Oe0gQDyUWlCS3lTRm5IOUE"

Worked. This was my first un-brick experience - thanks so much nicenice00!!

However, android showed the following information afterwards, so it was not exactly the right image for my device:

Device name: m300-l29 (no longer MHA-L29)

emui 3.1

android 5.1

====================

(2) Tried to get to android 7 (which was installed as I bought the phone).

Downloaded files from here:

https://www.gizrom.com/huawei-mate-9-stock-rom/

Followed this tutorial for installation (Method 1: Using HuRUpdater Tool with TWRP):

https://www.the***********.com/

install-stock-firmware-on-huawei-honor-guide/

Important to rename files as shown in the screenshot in the tutorial, i.e. to have the following four files in the "firmware" folder on the SD:

recovery.img (renamed from twrp-3.1.1-0-hi3660.img in my case)

update_data_public.zip (renamed from update_data_full_public.zip in my case)

update_all_hw.zip (renamed from update_full_MHA-L29_hw_eu.zip in my case)

update.zip

(side information: during flashing it indicates the image is for "MHA-L29C432B194")

Results in the following device information shown in android:

Device: MHA-L29 (correct!)

EMUI 5.0.1

Android 7.0

====================

(3) Tried to get to android 9. *Not recommened - see below*

Followed this tutorial for installation (Method 1: Using HuRUpdater Tool with TWRP, as in case 2 above):

https://www.the***********.com/

install-stock-firmware-on-huawei-honor-guide/

Downloaded files according to tutotial from: https://pro-teammt.ru/online-firmware-database-ru/

2019.05.13

MHA-L29 9.0.1.191(C432E7R1P8)

MHA-L29C432E7R1P8B191 (9.0.1.191)

http://update.dbankcdn.com/TDS/data/files/p3/s15/G3654/g1699/v261930/f1/full/update.zip

http://update.dbankcdn.com/TDS/data...l/MHA-L29_hw_eu/update_full_MHA-L29_hw_eu.zip

(no data public file as in (2) - one could try using the data_public from option (2)?)

These installed with several errros (maybe because the update_data_public.zip is missing?) and afterwards android did not load, TWRP was no longer installed and I could no longer install TWRP via fastboot ("no permissions") and method (1) did also no longer work. *shock* I then did a wipe/factory reset with the HUAWEi legacy recovery which was automatically booting, and then unlocked the bootloader again with fastboot. Then, suddenly, the phone booted into Android 9 and works perfectly. No idead why, but I now never touch it again (having neither TWRP nor Lineage running, but at least an up-to-date Android).

==============