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[ROM][10.0][ LineageOS 17.1 - For Huawei MediaPad M3 8.4 ][Update 18/06/2021]

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Me,You,and Daigorou

Senior Member
Jun 30, 2020
And also NTT Docomo will provide OTA until the end of November 2023, so if you have any trouble with BTV-L0J, you can back to stock Android 6 and then update to Nougat via OTA.

However, I recommend using dd command to backup the four partitions: boot, system, userdata, and vendor.
This is because neither Huawei nor Docomo has published stock ROMs for Android 7. Therefore, you need to downgrade to Android 6 and then upgrade to 7 via OTA.
If you have made a backup with dd command, you can easily back to Android 7. aaaaa.png

Me,You,and Daigorou

Senior Member
Jun 30, 2020
The method to bring BTV-L0J back to Android 6 is complicated...
I used DeepL to translate a memo written in Japanese, but it was quite long. So I used pastebin.
I did not try to correct the English text because it was too long.

You can find the files you need by searching here. But you may not find oeminfo.
LineaegeOS is not to change oeminfo, so you might be able to skip that part.

I can't guarantee your success, so please do it at your own risk.

Me,You,and Daigorou

Senior Member
Jun 30, 2020
dd commands. Do all backup commands on stock Android7. Requires a 14GB or larger SD card formatted with exFAT.


dd if=/dev/block/mmcblk0p28 of=/external_sd/boot bs=4096

dd if=/dev/block/mmcblk0p43 of=/external_sd/system bs=4096

dd if=/dev/block/mmcblk0p49 of=/external_sd/userdata bs=4096

dd if=/dev/block/mmcblk0p46 of=/external_sd/vendor bs=4096


dd if=/external_sd/boot of=/dev/block/mmcblk0p28

dd if=/external_sd/system of=/dev/block/mmcblk0p43

dd if=/external_sd/userdata of=/dev/block/mmcblk0p49

dd if=/external_sd/vendor of=/dev/block/mmcblk0p46


Senior Member
Apr 24, 2020
Hi !

Unfortunately the modernization works of the internet line in the property where I live have not been completed, as such the internet provider cannot connect me to the fiber yet ... a few good months have already passed since the works started, I have no idea what's going so hard, so I'm impatient too! Anyway, I'll keep you updated as soon as I switch to fiber, because this custom ROM deserves to be updated.
Thanks for all the great rom's!
By the way, do you plan to build crdroid?
I'm sorry because I can't help you with an answer right now ...

At the moment I'm very upset that the high speed internet (fiber) hasn't come yet ... I feel at least 10 years ago, because I only have ADSL and it works very hard :cry:
What about donations for a LTE plan if it's fast where you live or if you have 5G.
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Recognized Contributor
Feb 3, 2010
What about donations for a LTE plan if it's fast where you live or if you have 5G.
I can not accept, anyway thank you very much for the intention .... one is to donate occasionally or very rarely or not at all, and another is to be somehow forced to donate month by month ... I have not lost hope I still wait, I hope to be resolved in the coming months !
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Reactions: tensux


May 20, 2017
Hi @surdu_petru, I'm not very active on the forum, but i noticed that the last update for the ROM was almost 5 months ago. Is it possible that you have given up on this project? I really hope that's not the case...


New member
Oct 31, 2021
Hi, I am wondering whether this ROM support the Treble Project, which means can I flash other GSIs after flashing this Lineage17.1?
Thanks for your reply.

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    Hi @surdu_petru, I'm not very active on the forum, but i noticed that the last update for the ROM was almost 5 months ago. Is it possible that you have given up on this project? I really hope that's not the case...

    He said "Anyway, I'll keep you updated as soon as I switch to fiber, because this custom ROM deserves to be updated."
  • 23
    Hello !


    Android 10 is coming on your Huawei MediaPad M3 8.4, Kirin 950 SoC with the LineageOS 17.1 !

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

    LineageOS 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.

    All the source code for LineageOS is available in the LineageOS Github repo. And if you would like to contribute to LineageOS, please visit out Gerrit Code Review. You can also view the Changelog for a full list of changes & features.

    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.

    What's Working :
    • Touchscreen
    • Sensors
    • Lights
    • Audio
    • Video
    • Bluetooth
    • WiFi
    • GPS
    • 4G/data connectivity
    • Fingerprint sensor
    • Internal/External Storage
    • Off-mode Charging
    • DRM enabled ( the same Level L3 like on Stock EMUI Firmware )
    • Hardware Video Decoder

    What's Not Working :
    • Camera
    • USB tethering
    • Encryption
    • SELinux disabled !
    • there could be also others minor issues !

    Instructions :
    • Install the new TWRP 3.3.1-1 ( needed for Android Pie/Q )
    • Reboot to TWRP 3.3.1-1
    • Perform a clean wipe for the first install
    • Flash the latest build available
    • optional flash ( always the last available packages ) GApps
    • Reboot

    Downloads :

    Credits :
    • dianlujitao - helped me to boot on Android 10 !
    • Luk1337 - helped me to fix TWRP for Pie/Q !
    • XePeleato - for his fix/hack of FPS !
    • phhusson - for his awesome work on treble implementations !

    Reporting Bugs
    • DO NOT Report bugs if you're running a custom kernel or you installed Xposed
    • Grab a logcat right after the problem has occurred. (Please include at least a few pages of the log, not just the last few lines, unless you know what you're doing.)
    • If it is a random reboot, grab /sys/fs/pstore/console-ramoops and /sys/fs/pstore/dmesg-ramoops-0. (Do not bother getting a logcat unless you can get it just before the reboot. A logcat after a reboot is useless)
    • If the problem disappears after running "setenforce 0" from a root shell, grab /data/misc/audit/audit.log
    Remember to provide as much info as possible. The more info you provide, the more likely that the bug will be solved. Please also do not report known issues. Any bug not reported in the bug report format below may be ignored.




    DEV: Information

    Contributors :

    Paypal Donation : paypal.me/petrusurdu1
    Kernel Source Code: android_kernel_huawei_btv

    ROM OS Version: LineageOS 17.1 - Android 10
    ROM Kernel: Linux 4.4.x
    ROM Firmware Required: Stock Android 7 (Nougat) - EMUI 5.x
    Based On: AOSP Android 10

    Version Information :

    Created : 2020-12-06
    Last Updated : 2021-06-18
    New Build LineageOS 17.1 - Android 10 For Huawei MediaPad M3 8.4 ( Beethoven )

    Changelog :

    • fixed hardware video decoder
    • fixed an issue from previous update where applications cannot upload/download/share content
    • youtub fixed along with 1080p 60fps
    • antutu ( gpu test ) fixed
    • enabled Doze - Night Light (On/Off) under Settings - Display !
    • the build was switched to a mix of GSI in order to bring camera functionality in the future updates

    Downloads :

    Installations :
    First time installing this build ?

    • Unlock bootloader & install TWRP 3.3.1-1
    • Format data & wipe all into twrp
    • Install this build of LOS 17.1 & also boot_w09_2021-01-28.img only if your device is BTW-W09
    • Install Gapps (optional) & register your device in order to activate PlayStore !
    Update your device running LineageOS 17.1 :
    • Install this new build of LOS 17.1 ( via twrp ) & wipe cache/dalvik before to reboot to system !
    • users of BTV-W09 devices must install also boot_w09_2021-01-28.img

    This new release it's not yet fully working like I wanted to be , indeed it's better like before ... but there are still a lot of stuff to be fixed !
    Apart from the known issues, the issue of loading some games are still here - I'll hope to find a fix in the future updates.

    Please, like always post your feedback - I'm especially interested if something that was working well in the previous version now goes worse or not working at all !

    Thank you very much for your attention !

    Great news for today build !

    I just managed to enable Hardware Video Decoders based on Huawei Codecs for LineageOS 17.1 Android Q !

    Video in format 1080p 60fps are working flawless after this fix.

    All the new goodies will be added on the next update !
    Hello !

    There is a new Update Of LOS 17.1 into OP !

    • new security patch : May 5, 2021
    • minor kernel updates & fixes
    • fixes some graphics composer issues
    • version stable enough for daily use

    New Update Of LineageOS 17.1 !

    Hi !

    I just updated the OP with a new build of LOS 17.1 for our device Beethoven .

    • security patch updated to : January 5, 2021
    • kernel updated to 4.4.249
    • fixed facebook, instagram opening issues from previous version


    Thank you for your attention !