[ROM][8.1][ LOS 15.1 ( EOL ) For Huawei MediaPad M3 8.4 ][Update 05/01/2022]

[surdu_petru]

Android 8.1 is coming on your Huawei MediaPad M3 8.4, Kirin 950 SoC with the LineageOS 15.1 !


In October 2021 this ROM reached the end of life ( EOL )


Devices Supported :

Huawei MediaPad M3 8.4 :
BTV-DL09; BTV-L0J; BTV-W09




About LineageOS :

LineageOS 15.1 is a free, community built, aftermarket firmware distribution of Android 10 (Q), which is designed to increase performance and reliability over stock Android for your device.

LineageOS is based on the Android Open Source Project with extra contributions from many people within the Android community. It can be used without any need to have any Google application installed. Linked below is a package that has come from another Android project that restore the Google parts. LineageOS does still include various hardware-specific code, which is also slowly being open-sourced anyway.





* Your warranty is now void.
*
* We are not responsible for bricked devices, dead SD cards,
* thermonuclear war, or you getting fired because the alarm app failed. Please
* do some research if you have any concerns about features included in this ROM
* before flashing it! YOU are choosing to make these modifications, and if
* you point the finger at us for messing up your device, we will laugh at you.
*


Warning !
Installing a custom ROM on your device can sometimes be difficult and also with unwanted consequences! Therefore, make sure that you understand exactly what risks this operation entails - you are the only one responsible for all actions taken on your device.



Downloads ( EOL ):

LineageOS-15.1-BTV_2022-01-05.zip md5: 4b424433f7b746d9abad7c5adfec07a1

Only for BTV-W09 :

boot_w09_oreo_2022-01-05.img md5: f33b2ba35cbfb67b62b28b771bdff240

This ROM do not include GApps
please use always the last available pack :

OpenGApps for Android 8.1 ARM64
recommended to use nano or pico version






Instructions :

1. install the New TWRP 3.3.1-0 ( please check the second post )
2. format data in TWRP & reboot device into twrp to be able to use data !
3. go to Wipe -> Swipe to Factory Reset
4. wipe Vendor & System partitions
5. copy LOS-15.1 ROM & GApps to Internal/External Storage
6. go to Install -> check the LOS zip file
7. Add more Zips
8. check GApps zip file
9. Swipe to confirm Flash
10. Wait a bit until you'll see : "
- Installation complete!
- Unmounting partitions
Updating partitions details ...
... done
11. Wipe Cache/Dalvik -> Swipe to Wipe
12. If your device it's BTV-W09 please install now boot_w09_oreo_xxx.img
( Install -> Install Image -> choose "boot_w09_oreo_xxx.img" -> Select Partition to Flash Image: Boot )
13. Reboot System
14. Enjoy!





What's working :

* Touchscreen
* Audio & Video
* Wi-Fi
* Bluetooth
* GPS
* Lights
* Notification light
* Sensors
* Internal/External Storage
* ADB/MTP & USB/OTG
* Off-mode Charging
* RIL & LTE data connection
* HWComposer
* Camera
* DRM enabled ( the same Level L3 like on Stock EMUI Firmware )
* Fingerprint scanner
* Hardware Video Decoder





Not working :

* SELinux Disabled; ( won't be enabled anytime soon )
* Encryption; ( won't be fixed anytime soon )
* Cast - not working
* there may be others minor issues like camera not fully working and so on






Credits :

LineageOS Team






Source :

kernel: android_kernel_huawei_btv Branch: oreo !





Screenshots :

​

Contributors
surdu_petru
Paypal Donation : paypal.me/petrusurdu1
Source Code: https://github.com/Huawei-Dev?tab=repositories

ROM OS Version: Android 8.1/Oreo
ROM Kernel: Linux 4.4.x
ROM Firmware Required: Stock Android N - EMUI 5.x
Based On: LineageOS

Version Information
Status: Stable

Project Status
EOL

Created 2020-04-19
Last Updated 2022-01-05

 

[surdu_petru]

TWRP 3.3.1-0

TWRP 3.3.1-0​

You need this new TWRP in order to flash Lineage OS 15.1 !

Must be installed only on Android N EMUI 5.x

Working on all Huawei MediaPad M3 8.4 with Android N EMUI 5.x !



Download :

twrp-3.3.1-0.img md5: 984779bc7af812eb1b3e67e197732dbc

Installation :

adb reboot bootloader

fastboot flash recovery twrp-3.3.1-0.img

fastboot reboot

You need to FORMAT Data in order to decrypt /data, you need this step because LineageOS 15.1 do not have implemented right now encryption/decryption support !

 

[surdu_petru]

Back To Stock EMUI !

You can switch at any moment from LineageOS to Stock Huawei Firmware EMUI 5.x Android N !

Before take any action by installing the new TWRP-3.3.1-0/LOS 15.1, please make sure you can return back to stock by following the steps below !

From stock EMUI 5.1 you need to keep safe your ROM reference in order to be able to download the proper update.zip for your device !

adb shell getprop | grep 'ro.build.display.id'

[ro.build.display.id]: [BTV-DL09C100B311]

You should download from here the exact version of your update.zip ( FullOTA-MF ) which match "BTV-DL09C100B311" !

Extract UPDATE.APP from update.zip and put to dload folder created on the root of internal storage !

Please use "dload" method to flash via erecovery /dload/UPDATE.APP !


Warning !!!

What I described above works only if in the download link above you find the version EMUI 5.x Android N to match your "ro.build.display.id" ... but I guess from there you can only download the EMUI 4.x Android MM which are not suitable for our purpose !

So if you really want to successfully return to stock EMUI, make sure you have an update.app EMUI 5.x Android N that can be successfully installed via "dload" method before to switch to LOS 15.1 Android Oreo!

Another possibility would be to perform a full backup in your current configurations( TWRP & Stock EMUI 5.x ), assuming that you are already on EMUI 5.x Android N - before to switch to the new TWRP & LOS 15.1 ! And for restore your full backup, you must reinstall your previously TWRP - wich has capability to restore your encrypted full backup !

 

[surdu_petru]

Sim not working !

Why your SIM will not working on Lineage OS ?

Please provide this INFO, and I'll fix your issue on the next Update Of LineageOS.

Thanks !

 

[surdu_petru]

Warning !

Please do not install this new custom ROM, if the first three posts are not clear enough to you .


You can start by following this GUIDE with detailed explanations !


Thanks !

 

[surdu_petru]

Warning !

Please post all unrelated questions to this topic here !

Someone will definitely help you there.

Please post here your feedback, issues or whatever it's related to development with this new custom ROM !


Thank you for the understanding !


EDIT:

Thanks to @ericzollman & @sergio_sant for their tests, the new TWRP 3.3.1-0 & LineageOS 15.1 can be installed on All Huawei MediaPad M3 8.4 !

 

[surdu_petru]

Camera Working !!!

Hi !

I just managed to fix Camera ( photo & video recording ) on Lineage OS 15.1 (Android Oreo 8.1) !

For some unknown reason default Snap camera can't save pictures nor video, but we can use Open Camera which working without issues

EDIT :

DRM was already enabled along with LiveDisplay/Reading mode, Prevent accidental wake-up or World/Global Phone Network Type !

 

[Awesometic]

Hi.

First of all, thank you for this great work.
Your ROM is amazingly stable even it is the very first version.

Today I think I found a somewhat performance issue.
I installed Geekbench 5. Just to check how this machine fast compared to the other APs being used these days.
But the results seem too low. Please check this Geekbench 5 benchmark result page: https://browser.geekbench.com/v5/cpu/1877147
Expected results are: https://browser.geekbench.com/android_devices/371

I'm not an expert for Android development. Just curious
Thanks again!

 

[surdu_petru]

Hi.

First of all, thank you for this great work.
Your ROM is amazingly stable even it is the very first version.

Today I think I found a somewhat performance issue.
I installed Geekbench 5. Just to check how this machine fast compared to the other APs being used these days.
But the results seem too low. Please check this Geekbench 5 benchmark result page: https://browser.geekbench.com/v5/cpu/1877147
Expected results are: https://browser.geekbench.com/android_devices/371

I'm not an expert for Android development. Just curious
Thanks again!

Thanks !

There is no power management implementation and maybe that's why you got those poor results ! In fact I guess that the whole system run on a lower power configuration right now.

I have not time yet to try to work on increase performance , there is a lot of other important issues that' must be fixed prior.

For the moment I'm glad that it runs smoothly and without any random reboots

 

[dhdhehdv76]

headset doesnt work

 

[surdu_petru]

headset doesnt work

Thanks, I'll add to Not working list into OP !

Also we have an in house Huawei Bluetooth chip which can't be enabled on Android Oreo, even if it's working well on LOS 14.1 Android Nougat !

It was much easier if it was a BCM like on other Huawei / Honor devices ... I know that a ROM without BT is useless, but I have no clue how can be fix it ... it's been three days since I've only been working on BT fixing, and unfortunately no positive signs so far


OK, I'll try to fix headset issue right in the next update !

 

[qlue4e]

maybe and i dont know very well but if the mate 8 which is almost the same device has the same bluetooth chip is it possible to use its code for the bluetooth part because its already updated to oreo if i remember correctly ? personally i dont use the bluetooth at all. waiting for headset fingerprint and maybe the power manager because im playing pubg on it but dont stress yourself health is more important and thank you for your hard work have a good month.

 

[surdu_petru]

maybe and i dont know very well but if the mate 8 which is almost the same device has the same bluetooth chip is it possible to use its code for the bluetooth part because its already updated to oreo if i remember correctly ? personally i dont use the bluetooth at all. waiting for headset fingerprint and maybe the power manager because im playing pubg on it but dont stress yourself health is more important and thank you for your hard work have a good month.

Yes, that's the bad news ... I already used all Oreo stuff from Mate 8, but unfortunately Mate 8 uses a BT chip based on Broadcom (BCM) !

 

[Awesometic]

Hi.

I'm going to report another unimplemented thing just found; Speakers work but only the top. The bottom speaker doesn't work.
Maybe you already know that.

One question, is there any chance to get stereo sound with the 2 speakers?

 

[surdu_petru]

Hi.

I'm going to report another unimplemented thing just found; Speakers work but only the top. The bottom speaker doesn't work.
Maybe you already know that.

One question, is there any chance to get stereo sound with the 2 speakers?

Sound it's not working at all right now after I tried to fix headset issue, and it's been 10 hours since I've been trying to get it back the way it was

Starting next week the development here will be very slowly as I restart my work , and I'll not have too much free time for development.


From what remains to be fixed, nothing can be fixed in a few hours .... so I don't know when I'll have time to try to fix the rest of the issues, also I don't know when I'll release a new update .


Thanks for understanding !

 

[Awesometic]

Sound it's not working at all right now after I tried to fix headset issue, and it's been 10 hours since I've been trying to get it back the way it was

Starting next week the development here will be very slowly as I restart my work , and I'll not have too much free time for development.


From what remains to be fixed, nothing can be fixed in a few hours .... so I don't know when I'll have time to try to fix the rest of the issues, also I don't know when I'll release a new update .


Thanks for understanding !

Take a break.
I, probably we all don't want you to be pressed by the updates. Publishing LineageOS itself is the present for us!
Actually still waiting for the updates, but this because only you could do develop this. But don't want you to go hurry.

 

[surdu_petru]

Take a break.
I, probably we all don't want you to be pressed by the updates. Publishing LineageOS itself is the present for us!
Actually still waiting for the updates, but this because only you could do develop this. But don't want you to go hurry.

I think you're right, I wanted to do too much at the same time, and ended up with a broken LOS build !

There are far too many stuff to be implemented and fixed on this ROM and it sound likely will never be finished ... only the correct kernel update can take 6 months, so updating to Android Pie will not be as soon as I thought initially .



EDIT:

It looks like I finally managed to fix the sound issues : stereo speakers enabled & also headset issue

 

[surdu_petru]

New Update !!!

New Update Of LOS 15.1 For MediaPad M3 8.4


Changelog:
- DRM enabled - now you can watch video streaming that needs drm support !
- fixed stereo speakers & headset
- enabled LiveDisplay & Reading mode
- added Prevent accidental wake-up
- Camera fixed ( but not fully working )
* video recording only on default format
* video recording on front camera not working
* HDR & also most all settings not working apart default !
- enabled World/Global Network preference type
- GPS improved
- Updated Android security patch level : April 5, 2020 !

Please check OP to download the new update, thanks !

 

[surdu_petru]

Good news !

Hi !

I just managed to fix fingerprint scanner on my device

And another good news, there is a way to update this device to Android 10 : I just found out it was possible even if we don't have fstab implementation into kernel/dts - and this stuff can't be implemented in our device as dts images can't be builded or updated ! So, there is a way to by-pass this kernel requirement and boot the latest Android Q on the legacy devices

 

[infamous_black]

Hi !

I just managed to fix fingerprint scanner on my device

And another good news, there is a way to update this device to Android 10 : I just found out it was possible even if we don't have fstab implementation into kernel/dts - and this stuff can't be implemented in our device as dts images can't be builded or updated ! So, there is a way to by-pass this kernel requirement and boot the latest Android Q on the legacy devices

Great news, thanks again for all your hard work!