[ROM] [UNOFFICIAL] LineageOS 14.1 |ASUS Memo Pad HD 7 (me173x) [MT8125]

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superdragonpt

Recognized Developer
Apr 27, 2013
4,951
19,329
Lisbon / Taiwan / USA
www.caixamagica.pt
Disclaimer:
LineageOS (Lineage Android Distribution) members or anyone else on this website is 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 the products you find here 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. Your warranty will be void if you tamper with any part of your device / software.





How to Install:
1- BACKUP, BACKUP, BACKUP, All will be WIPED!
2 - Unlock bootloader instructions here
3 - Flash the new mandatory TWRP Recovery
4 - Move Rom & Gapps (optional) into device storage
5 - Full Wipes
6- Flash Rom & Gapps (gapps are OPTIONAL)




for GAPPS:

Choose Gapps Package "ARM" > "7.1" > "Pico" or "Nano" visit OpenGAPPS




Working:

  • It Boots
  • Storages
  • Wifi
  • Audio
  • Charging
  • Offline Charging
  • Video decoding / Playback (i.e.: Youtube) up to 720p
  • Sensor: magnetometer: akm8963
  • Bluetooth (basic functions, pairing, file transfer, a2dp (Audio))
  • GPS - GNSS
  • DRM Widevine : For Netflix, Amazon Prime, etc
  • Front Camera: mt9m114_mipi_raw
  • Front camera: GC0339_RAW
  • ZRAM swap ( LZ4 )
  • etc ....



NOT Working:
  • Rear Camera: a5142_mipi_raw
  • Sensors: accelerometer (autorotation)
  • You tell me


Special Thanks

  • OMNI Rom
  • LineageOS
  • DerTeufel1980 & fire855 ( my Team mates from M.A.D)


GPL Compliance:




--> "asus_n" branchs
 
Last edited:

superdragonpt

Recognized Developer
Apr 27, 2013
4,951
19,329
Lisbon / Taiwan / USA
www.caixamagica.pt
FAQ

Small FAQ:



Q: How can i Unlock the Bootloader?
A:
Instructions for Unlocking the Bootloader can be found here

Q: After locking the screen, the screen is all black, and /or flickering and I'm forced to reboot, how can I fix this?
A:
If you have this issue, then your device uses the second screen/lcm hardware revision
( the lgld070wx3_dsi_vdo ), please use the second kernel.zip for this variant, it'll be added an second kernel . zip for people with this variant, on the download section with the ROM release

Q: how to flash this second kernel for the new hardware variant ?
A:
After flashing the ROM, flash the second kernel afterwards

Q: Where are the Developer Options?
A:
Go to Settings>About Tablet, and tap 7 times on the Build Number

Q: How can i enable the Advance Restart?
A:
in the developer options, you can enable it there

Q: How can i change the WebView implementation?
A:
in the developer options.

Q: How can i root this rom?
A:
you can use Magisk

Magisk: v.23

note: Magisk builds v24.x and v25.x do NOT work / Not fully tested

Q: Do i really need to update recovery?
A:
YES
--> If you already have Lineage13 TWRP release, your OK

Q: I can't flash this Rom on recovery "X Y Z" why?
A:
You need to update your recovery to TWRP

Q: how to work with twrp?
A:
in the first time TWRP boots, it'll ask if you want to allow modifications, slide to YES

Q: how to wipe and flash in twrp?
A:
Go "mount" and mount "system"
then go "wipe" > and wipe dalvik / cache / data / System

Q: How can i flash the new recovery?
A:
If you already have an custom recovery installed:

Download the new TWRP recovery zip
flash the new recovery
reboot to recovery again, TWRP should be now installed

If you don't have any custom recovery installed:
- You can extract the "recovery.img" from the .zip
- Open an terminal
- Boot to fastboot mode, and type:

Code:
fastboot flash recovery recovery.img

then reboot:

Code:
fastboot reboot


Q: I Love your work, how can i thank you?
A:
You can press the "Thanks" button, and if you wish, you can pay me a beer




..
 
Last edited:

superdragonpt

Recognized Developer
Apr 27, 2013
4,951
19,329
Lisbon / Taiwan / USA
www.caixamagica.pt
Changelogs


Build 20220808
  • First Release

Build 20220820
  • Fix Advance reboot Menu (removed: reboot bootloader, isn't used)
  • ZRAM: Increase disk size to 768MB (recommended for 1GB Ram devices)
  • ZRAM: Boost performance: Actually enable LZ4 compression ( inline with current kernel)
  • ART: Update flags (Drop old flags, Drop uneeded dex2oat, force dex2oat not to use swap file ,etc)
  • Enable Pinner Service: pinning files into memory, boot oat, services dex (Improves system performance)
  • Removed LOW RAM flag:
    - Device tree & kernel has been greatly optimized
    - We finnaly have working ZRAM swap since los 13, working great
    - There's no need to cripple the device out of useful features like MultiUser
  • Fix GPS
  • Fix DRM Widevine : For Netflix, Amazon Prime, etc
  • Fix Bluetooth (basic functions, pairing, file transfer)
    - Bluetooth a2dp (Audio) is still broken (work in progress)
  • Fix Front Camera: mt9m114_mipi_raw / GC0339_RAW ( photos )
  • Some optimizations done at frameworks

Build 20220911
  • Fix Bluetooth a2dp (Audio)
  • Removed Useless LineageOS apps for more free RAM
  • WLAN: Update blobs from MediaTek ALPS N1
  • LCM: lgld070wx3_dsi_vdo: Fix flickering on resume, discharge ESD properly
  • Improved System Animations
  • Fix FWB SysUI / StatusBar, power leak
  • Fix FWB ArraySet crash
  • Fix FWB backup schedule system_server crash
  • Fix FWB batterySendBroadcast not synchronized issue
  • Fix FWB SystemUI FC due to Google Assistant
  • Fix FWB hwui: skip empty frame
  • Fix FWB system server crash caused by CME in usage stats
  • Fix FWB batterySendBroadcast not synchronized issue
  • Fix FWB PackageManagerService user CE data failed



Downloads


TWRP 3.1.1



Build 20220911

If you have the second hardware Screen revision by LG (check FAQ), flash this
kernel for the Build 20220911





Older Builds

Build 20220808
If you have the second hardware Screen revision by LG (check FAQ), flash this
kernel for the Build 20220808


Build 20220820

If you have the second hardware Screen revision by LG (check FAQ), flash this
kernel for the Build 20220820



 
Last edited:

raby

Member
Oct 21, 2017
19
6
The year is 2082. Society as we know it has collapsed and the world is but a nuclear wasteland. I haven't seen or talked to another human in weeks. Food is scarce and shelter is hard to come by... But life lingers on, even if just for a while longer, nature tries to heal itself with the little sunlight that manages to reach the ground through the dense clouds of soot. Last night I heard screams coming from the forest of dead pine trees, east of the abandoned glass factory. I'm not sure if they were human screams or the calls of an alternate, but I'm not eager to find out... I must hurry and head north, this place is no longer safe. To add insult to injury, I broke my only weapon while I was trying to cut down a few tree branches to light a fire... until I find materials to fix it, my possessions are my pet dog Alex, an half eaten can of beans and my ME173X running Android 69 with the latest security updates.

;)
 

grochib

Member
Sep 28, 2015
8
2
Disclaimer:
LineageOS (Lineage Android Distribution) members or anyone else on this website is 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 the products you find here 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. Your warranty will be void if you tamper with any part of your device / software.





How to Install:
1- BACKUP, BACKUP, BACKUP, All will be WIPED!
2 - Unlock bootloader instructions here
3 - Flash the new mandatory TWRP Recovery
4 - Move Rom & Gapps (optional) into device storage
5 - Full Wipes
6- Flash Rom & Gapps (gapps are OPTIONAL)




for GAPPS:

Choose Gapps Package "ARM" > "7.1" > "Pico" or "Nano" visit OpenGAPPS




Working:

  • It Boots
  • Storages
  • Wifi
  • Audio
  • Charging
  • Offline Charging
  • Video decoding / Playback (i.e.: Youtube) up to 720p
  • Sensor: magnetometer: akm8963
  • etc ....



NOT Working:
  • Bluetooth
  • GPS - GNSS
  • DRM Widevine : For Netflix, Amazon Prime, etc
  • Front Camera: mt9m114_mipi_raw
  • Front camera: GC0339_RAW
  • Rear Camera: a5142_mipi_raw
  • Sensors: accelerometer (autorotation)
  • You tell me


Special Thanks

  • OMNI Rom
  • LineageOS
  • DerTeufel1980 & fire855 ( my Team mates from M.A.D)


GPL Compliance:




--> "asus_n" branchs
This is great! Thank you so much! I never expected so much support for this tablet...

Unfortunately, I really need GPS so I have to wait for another build...
 

505dv

Member
May 10, 2012
45
18
Thank you very much for providing builds for this tablet! The 13 build really helped us a lot, as our 2-year-old could watch downloaded Peppa Pig episodes from Netflix during long vacation drives. Although I did had to download a previous major version of the Netflix APK to get it to work on Android 6.

As this version doesn't have Widevine DRM, Netflix won't work, I guess. The current version of Netflix from the app store needs at least Android 7, so it would be nice if this new build would also support that in the future. Is it possible to flash that somehow, or would you need to compile that during build-time? If so, it that planned, or are there any technical difficulties regarding that?
 

superdragonpt

Recognized Developer
Apr 27, 2013
4,951
19,329
Lisbon / Taiwan / USA
www.caixamagica.pt
New Build is up :)


Build 20220820
  • Fix Advance reboot Menu (removed: reboot bootloader, isn't used)
  • ZRAM: Increase disk size to 768MB (recommended for 1GB Ram devices)
  • ZRAM: Boost performance: Actually enable LZ4 compression ( inline with current kernel)
  • ART: Update flags (Drop old flags, Drop uneeded dex2oat, force dex2oat not to use swap file ,etc)
  • Enable Pinner Service: pinning files into memory, boot oat, services dex (Improves system performance)
  • Removed LOW RAM flag:
    - Device tree & kernel has been greatly optimized
    - We finnaly have working ZRAM swap since los 13, working great
    - There's no need to cripple the device out of useful features like MultiUser
  • Fix GPS
  • Fix DRM Widevine : For Netflix, Amazon Prime, etc
  • Fix Bluetooth (basic functions, pairing, file transfer)
    - Bluetooth a2dp (Audio) is still broken (work in progress)
  • Fix Front Camera: mt9m114_mipi_raw / GC0339_RAW ( photos )
  • Some optimizations done at frameworks


cheers
 

superdragonpt

Recognized Developer
Apr 27, 2013
4,951
19,329
Lisbon / Taiwan / USA
www.caixamagica.pt
New Build is up ;)


Build 20220911
  • Fix Bluetooth a2dp (Audio)
  • Removed Useless LineageOS apps for more free RAM
  • WLAN: Update blobs from MediaTek ALPS N1
  • LCM: lgld070wx3_dsi_vdo: Fix flickering on resume, discharge ESD properly
  • Improved System Animations
  • Fix FWB SysUI / StatusBar, power leak
  • Fix FWB ArraySet crash
  • Fix FWB backup schedule system_server crash
  • Fix FWB batterySendBroadcast not synchronized issue
  • Fix FWB SystemUI FC due to Google Assistant
  • Fix FWB hwui: skip empty frame
  • Fix FWB system server crash caused by CME in usage stats
  • Fix FWB batterySendBroadcast not synchronized issue
  • Fix FWB PackageManagerService user CE data failed
 
  • Like
Reactions: andgek and bravur

pimisen

Member
Sep 13, 2010
13
6
Asus MeMO Pad 7
OnePlus 2
First of all: thank you so much for giving us Andoid 7 for this old thing!

I just found out that Adaway won't install from F-Droid:

Error installing AdAway

Parsing apk file failed! Maybe minSdk of apk is lower than current Sdk? Look into logcat for more specific warnings of Android's PackageParser.
 
  • Like
Reactions: superdragonpt

superdragonpt

Recognized Developer
Apr 27, 2013
4,951
19,329
Lisbon / Taiwan / USA
www.caixamagica.pt
First of all: thank you so much for giving us Andoid 7 for this old thing!

I just found out that Adaway won't install from F-Droid:

Error installing AdAway

Parsing apk file failed! Maybe minSdk of apk is lower than current Sdk? Look into logcat for more specific warnings of Android's PackageParser.


Yup that's normal, im also an user of it

see here: https://github.com/AdAway/AdAway

"For devices older than Android 8 Oreo, use the version 4 of AdAway."


Get the last version here:

Version 4.3.6 > on Assets download " AdAway-4.3.6-200726.apk "

cheers
 
  • Like
Reactions: pimisen

superdragonpt

Recognized Developer
Apr 27, 2013
4,951
19,329
Lisbon / Taiwan / USA
www.caixamagica.pt
My observations of LG kernel up to 20220911
- battery charging VERY slow
- rotation sensor not working
- camera not working
- fast stock, slow with GAPPS
Maybe these are already on the todo list. Great to have A7 on this still usable tablet.
Cheers



hi

rotation sensor not working :
Yeah this is stated on the "not working" status " > Sensors: accelerometer (autorotation)"
I could never fixed this sensor on my kernel

battery charging VERY slow
The device can be very picky with chargers, with the stock charger it can charge up to 1.2 AMP @ 5v

fast stock, slow with GAPPS
Yeah GAPPS really have an huge impact on devices, it runs really smooth without GAPPS installed
Google sucks :p

camera not working
This is very nice report ( Thanks ) every single user that reported me the front camera isn't working has an device with the LG screen...










I just bought my third ASUS ME173X and got it yesterday ( since my kid broke the second one .. )
unfortunately all my tablets have the same nt35521 Screen ( really hopping to grab an LG variant ) for testing :/

cheers
 

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Reactions: tweakradje

raby

Member
Oct 21, 2017
19
6
sus ඞ

This is with the tablet plugged into the wall 24/7, sometimes it gets tired and stops charging
Don't mind the second pic, that's just it being used as a wireless monitor :p
 

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superdragonpt

Recognized Developer
Apr 27, 2013
4,951
19,329
Lisbon / Taiwan / USA
www.caixamagica.pt
How can I find out, what screen our tablet has?
You need to be running any of stock firmware with root rights.

There's many apps that facilitate the task like "deviceinfohw" , give the app root on settings, and on the main page it'll show you what LCM you device has.
 

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Top Liked Posts

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  • 2
    New Build is up ;)


    Build 20220911
    • Fix Bluetooth a2dp (Audio)
    • Removed Useless LineageOS apps for more free RAM
    • WLAN: Update blobs from MediaTek ALPS N1
    • LCM: lgld070wx3_dsi_vdo: Fix flickering on resume, discharge ESD properly
    • Improved System Animations
    • Fix FWB SysUI / StatusBar, power leak
    • Fix FWB ArraySet crash
    • Fix FWB backup schedule system_server crash
    • Fix FWB batterySendBroadcast not synchronized issue
    • Fix FWB SystemUI FC due to Google Assistant
    • Fix FWB hwui: skip empty frame
    • Fix FWB system server crash caused by CME in usage stats
    • Fix FWB batterySendBroadcast not synchronized issue
    • Fix FWB PackageManagerService user CE data failed
    1
    Which Lineage version is the fastest?
    1
    Which Lineage version is the fastest?


    Lineage !4 is on-pair with LOS13.

    Lineage14 is currently the best if you ask me
    1
    First of all: thank you so much for giving us Andoid 7 for this old thing!

    I just found out that Adaway won't install from F-Droid:

    Error installing AdAway

    Parsing apk file failed! Maybe minSdk of apk is lower than current Sdk? Look into logcat for more specific warnings of Android's PackageParser.
    1
    My observations of LG kernel up to 20220911
    - battery charging VERY slow
    - rotation sensor not working
    - camera not working
    - fast stock, slow with GAPPS
    Maybe these are already on the todo list. Great to have A7 on this still usable tablet.
    Cheers
  • 4
    Disclaimer:
    LineageOS (Lineage Android Distribution) members or anyone else on this website is 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 the products you find here 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. Your warranty will be void if you tamper with any part of your device / software.





    How to Install:
    1- BACKUP, BACKUP, BACKUP, All will be WIPED!
    2 - Unlock bootloader instructions here
    3 - Flash the new mandatory TWRP Recovery
    4 - Move Rom & Gapps (optional) into device storage
    5 - Full Wipes
    6- Flash Rom & Gapps (gapps are OPTIONAL)




    for GAPPS:

    Choose Gapps Package "ARM" > "7.1" > "Pico" or "Nano" visit OpenGAPPS




    Working:

    • It Boots
    • Storages
    • Wifi
    • Audio
    • Charging
    • Offline Charging
    • Video decoding / Playback (i.e.: Youtube) up to 720p
    • Sensor: magnetometer: akm8963
    • Bluetooth (basic functions, pairing, file transfer, a2dp (Audio))
    • GPS - GNSS
    • DRM Widevine : For Netflix, Amazon Prime, etc
    • Front Camera: mt9m114_mipi_raw
    • Front camera: GC0339_RAW
    • ZRAM swap ( LZ4 )
    • etc ....



    NOT Working:
    • Rear Camera: a5142_mipi_raw
    • Sensors: accelerometer (autorotation)
    • You tell me


    Special Thanks

    • OMNI Rom
    • LineageOS
    • DerTeufel1980 & fire855 ( my Team mates from M.A.D)


    GPL Compliance:




    --> "asus_n" branchs
    4
    FAQ

    Small FAQ:



    Q: How can i Unlock the Bootloader?
    A:
    Instructions for Unlocking the Bootloader can be found here

    Q: After locking the screen, the screen is all black, and /or flickering and I'm forced to reboot, how can I fix this?
    A:
    If you have this issue, then your device uses the second screen/lcm hardware revision
    ( the lgld070wx3_dsi_vdo ), please use the second kernel.zip for this variant, it'll be added an second kernel . zip for people with this variant, on the download section with the ROM release

    Q: how to flash this second kernel for the new hardware variant ?
    A:
    After flashing the ROM, flash the second kernel afterwards

    Q: Where are the Developer Options?
    A:
    Go to Settings>About Tablet, and tap 7 times on the Build Number

    Q: How can i enable the Advance Restart?
    A:
    in the developer options, you can enable it there

    Q: How can i change the WebView implementation?
    A:
    in the developer options.

    Q: How can i root this rom?
    A:
    you can use Magisk

    Magisk: v.23

    note: Magisk builds v24.x and v25.x do NOT work / Not fully tested

    Q: Do i really need to update recovery?
    A:
    YES
    --> If you already have Lineage13 TWRP release, your OK

    Q: I can't flash this Rom on recovery "X Y Z" why?
    A:
    You need to update your recovery to TWRP

    Q: how to work with twrp?
    A:
    in the first time TWRP boots, it'll ask if you want to allow modifications, slide to YES

    Q: how to wipe and flash in twrp?
    A:
    Go "mount" and mount "system"
    then go "wipe" > and wipe dalvik / cache / data / System

    Q: How can i flash the new recovery?
    A:
    If you already have an custom recovery installed:

    Download the new TWRP recovery zip
    flash the new recovery
    reboot to recovery again, TWRP should be now installed

    If you don't have any custom recovery installed:
    - You can extract the "recovery.img" from the .zip
    - Open an terminal
    - Boot to fastboot mode, and type:

    Code:
    fastboot flash recovery recovery.img

    then reboot:

    Code:
    fastboot reboot


    Q: I Love your work, how can i thank you?
    A:
    You can press the "Thanks" button, and if you wish, you can pay me a beer




    ..
    4
    Changelogs


    Build 20220808
    • First Release

    Build 20220820
    • Fix Advance reboot Menu (removed: reboot bootloader, isn't used)
    • ZRAM: Increase disk size to 768MB (recommended for 1GB Ram devices)
    • ZRAM: Boost performance: Actually enable LZ4 compression ( inline with current kernel)
    • ART: Update flags (Drop old flags, Drop uneeded dex2oat, force dex2oat not to use swap file ,etc)
    • Enable Pinner Service: pinning files into memory, boot oat, services dex (Improves system performance)
    • Removed LOW RAM flag:
      - Device tree & kernel has been greatly optimized
      - We finnaly have working ZRAM swap since los 13, working great
      - There's no need to cripple the device out of useful features like MultiUser
    • Fix GPS
    • Fix DRM Widevine : For Netflix, Amazon Prime, etc
    • Fix Bluetooth (basic functions, pairing, file transfer)
      - Bluetooth a2dp (Audio) is still broken (work in progress)
    • Fix Front Camera: mt9m114_mipi_raw / GC0339_RAW ( photos )
    • Some optimizations done at frameworks

    Build 20220911
    • Fix Bluetooth a2dp (Audio)
    • Removed Useless LineageOS apps for more free RAM
    • WLAN: Update blobs from MediaTek ALPS N1
    • LCM: lgld070wx3_dsi_vdo: Fix flickering on resume, discharge ESD properly
    • Improved System Animations
    • Fix FWB SysUI / StatusBar, power leak
    • Fix FWB ArraySet crash
    • Fix FWB backup schedule system_server crash
    • Fix FWB batterySendBroadcast not synchronized issue
    • Fix FWB SystemUI FC due to Google Assistant
    • Fix FWB hwui: skip empty frame
    • Fix FWB system server crash caused by CME in usage stats
    • Fix FWB batterySendBroadcast not synchronized issue
    • Fix FWB PackageManagerService user CE data failed



    Downloads


    TWRP 3.1.1



    Build 20220911

    If you have the second hardware Screen revision by LG (check FAQ), flash this
    kernel for the Build 20220911





    Older Builds

    Build 20220808
    If you have the second hardware Screen revision by LG (check FAQ), flash this
    kernel for the Build 20220808


    Build 20220820

    If you have the second hardware Screen revision by LG (check FAQ), flash this
    kernel for the Build 20220820



    4
    The year is 2082. Society as we know it has collapsed and the world is but a nuclear wasteland. I haven't seen or talked to another human in weeks. Food is scarce and shelter is hard to come by... But life lingers on, even if just for a while longer, nature tries to heal itself with the little sunlight that manages to reach the ground through the dense clouds of soot. Last night I heard screams coming from the forest of dead pine trees, east of the abandoned glass factory. I'm not sure if they were human screams or the calls of an alternate, but I'm not eager to find out... I must hurry and head north, this place is no longer safe. To add insult to injury, I broke my only weapon while I was trying to cut down a few tree branches to light a fire... until I find materials to fix it, my possessions are my pet dog Alex, an half eaten can of beans and my ME173X running Android 69 with the latest security updates.

    ;)
    3
    I'm waiting for the continuation and publication of this work in the form of a book.