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[ROM][UNOFFICIAL][10.0][tb8704f/x/v] LineageOS 17.1 for Lenovo TAB 4 8 plus

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TcT

Senior Member
Jan 10, 2006
58
1
Was anybody able to install the Netflix app from the playstore with this ROM? Playstore says it's incompatible, there was no problem installing with the stock 8.1 ROM. I've not yet checked if the APK can be installed and run manually.
 

mistersixt

Senior Member
Jun 17, 2011
461
209
Was anybody able to install the Netflix app from the playstore with this ROM? Playstore says it's incompatible, there was no problem installing with the stock 8.1 ROM. I've not yet checked if the APK can be installed and run manually.

You could try to install the "APK Mirror" tool from the play store first ...

https://play.google.com/store/apps/details?id=com.apkmirror.helper.prod&hl=de&gl=US

... and install the latest stable Netflix apk manually after having downloaded it from here (like version 7.77.0) :

https://www.apkmirror.com/?post_type=app_release&searchtype=apk&s=netflix

Kind regards, mistersixt.
 

WiteWulf

Senior Member
Mar 31, 2020
50
17
You need to set the fingerprint correctly for your device to be able to use the stock Netflix app from the Play Store:

https://forum.xda-developers.com/showpost.php?p=81681043&postcount=32

(Don't set it to Android 9, as in that howto, of course)

---------- Post added at 11:20 AM ---------- Previous post was at 11:17 AM ----------

Anyone else having lock-up issues when the device is unused for a couple of days?

Device details in my sig, and what I see is that activating the screen gives me a message that the SD card is missing (it's a good quality Sandisk card, less than 12 months old), clearing that and trying to do the swipe code then locks up the tablet. Nothing but holding down the power button for 10secs for a hard reboot fixes it.
 

burned42

New member
Nov 4, 2020
1
0
Awesome, thanks!

Thank you very much, it works like a charm on my tb-8704f. Although when using the TWRP version from the guide that's linked first post it didn't work (linageos was in bootscreen animation forever).

Somewhere in this thread I found links to this thread (https://forum.xda-developers.com/th...very-twrp-3-4-0-0-lenovo-tab4-8-plus-t4134151) which has a different/newer version of TWRP and with this, I could flash the device and linageos directly booted normally :)
 

Acel337

Member
Aug 17, 2013
8
1
I am having an issue when setting up with a child account to this tablet (Lenovo TB-8704F) "this profile manager is required for google accounts managed with family link".
Tablet is on the latest version of this rom (20200906) with also latest OpenGapps (nano). Issue occurs after clicking next on Activate Family Link Manager.
It runs fine with normal account with all apps. Also tried installing the family link app before adding account.

Please help as I do not have another tablet spare and need it for my very curious 7 year old.
 

Ecthelion3

Senior Member
Jun 17, 2014
100
24
I am having an issue when setting up with a child account to this tablet (Lenovo TB-8704F) "this profile manager is required for google accounts managed with family link".
Tablet is on the latest version of this rom (20200906) with also latest OpenGapps (nano). Issue occurs after clicking next on Activate Family Link Manager.
It runs fine with normal account with all apps. Also tried installing the family link app before adding account.

Please help as I do not have another tablet spare and need it for my very curious 7 year old.
To me this sounds more like a problem with Google's Family Link app than a problem of the ROM here. So you might want to do a Google search for the above error message and search the answers on the Google support pages. E.g. https://support.google.com/mail/thread/4355255?hl=en sounds similar to your problem.
 

adannyo

New member
Oct 10, 2019
1
4
wifi doesnt work for me on the wifi only tablet. Installed 20200906. Click the wifi button, thinks about it for a minute, then disables wifi again.
Also, the finger print sensor doesnt work.
 
Last edited:

adannyo

New member
Oct 10, 2019
1
4
Cheers for the tip, but that didn't work. Tried 3 times and same problem each time. Finger print and WiFi both refuse to work on my 8704f.

Decided to revert back to original 181108.

The ota update breaks WiFi completely.
Lineage 16 breaks the external speaker and WiFi is inconsistent.
Lineage 17 breaks WiFi and finger print completely.

Installing ROMs had always been a challenge. Only way I can get ROMs to install is flash the stock system.img and boot.img on a completely wiped device, boot the system and let it encrypt, then once at language selection reboot to twrp, dirty flash desired ROM and use.

Anything else results in boot loop.
 

Acel337

Member
Aug 17, 2013
8
1
To me this sounds more like a problem with Google's Family Link app than a problem of the ROM here. So you might want to do a Google search for the above error message and search the answers on the Google support pages. E.g. https://support.google.com/mail/thread/4355255?hl=en sounds similar to your problem.

I have managed to get it working now by installing 'PixelExperience 9.0 for Lenovo Tab 4 8 Plus'.

Not sure why it works but it may be due to Android 10 and works only up to 9 ?
 

jovian.parco

New member
Apr 9, 2020
3
0
First time doing a custom rom please guide me

I have installed twrp and magisk but the thing is that I have to enter a password everytime i opened twrp will it be a problem?, Also my device is stock 8.1 so whats format data as data loss?
 

Ecthelion3

Senior Member
Jun 17, 2014
100
24
I have installed twrp and magisk but the thing is that I have to enter a password everytime i opened twrp will it be a problem?, Also my device is stock 8.1 so whats format data as data loss?
You should find some instructions here in this thread. If that does not help, on the LineageOS pages there are installation instructions for a lot of devices where the installation is similar to our Tab 4 8 Plus, e.g. https://wiki.lineageos.org/devices/osprey/install for the Moto G3.
 

ocyrus99

Member
Aug 9, 2010
29
1
Ottawa
Thank you so much for this! I have a 8704V (2G variant) stuck at 7.1 and it was borderline unusable for anything more than an e-reader with the factory image. This has made it much more enjoyable to use.
 
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  • 7
    Here is the last august 2021 lineage code and security patch update.

    1
    How did you install this? I was able to install the 2020 just fine, but tried to install the latest from Pedro and it just sits endlessly.

    I'm definitely a n00b and took a stock android 8 tab 4 8 plus

    I fastboot into twrp and then click install and then select the 2021 download from the post above and swipe and it just sits. I'm not sure what's wrong


    Recap, I installed the 2020 version of 17.1 from page 1 of this thread, now I wanted to utilize Pedro's link that includes the security fixes, but I can't get it to install, but maybe I'm doing it wrong, but seem to be stuck on the same screen as oldleaf.
    I forgot the exact procedure to upgrade to lineage-17.1-20210617-UNOFFICIAL-TB8704.zip. But I have just successfully upgrade from 20210617 to 20210820.

    Here are the steps:
    1) power off the tablet, Vol-Up + Power to boot the recovery screen.
    2) factory default and boot to bootloader
    3) with USB cable connected, run
    fastboot boot twrp-3.2.3-0-tb_8704x.img
    4) in TWRP, "advanced" -> "fix contexts"
    5) back to main screen, wipe data
    6) back to main screen, install lineage-17.1-20210820-UNOFFICIAL-TB8704.zip from SDcard
    7) back to the last screen, install BiTGApps and reboot
  • 22
    http%3A%2F%2Ffiles.paulfasola.fr%2FCyanogenMod%2FLineageOS.png


    Code:
    /*
     * I'm not responsible for bricked devices, dead SD cards, thermonuclear war, or you getting fired because the alarm app failed (like it did for me...). 
     * 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 me for messing up your device, I will laugh at you. 
     * Your warranty will be void if you tamper with any part of your device / software.
     * Same statement for XDA.
     */

    LineageOS is a free, community built, aftermarket firmware distribution of Android 10, 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.


    What works:
    Calls/SMS/Mobile data
    Wifi
    Bluetooth
    GPS
    Camera
    Audio
    FM radio
    Torchlight
    USB and WLAN tethering

    Broken
    DT2W
    You tell me

    Source code:
    device : https://github.com/lenovo-devs/android_device_lenovo_TB8704
    device tb-comon https://github.com/lenovo-devs/android_device_lenovo_tb-common
    kernel: https://github.com/lenovo-devs/android_kernel_lenovo_msm8953
    vendor: https://github.com/lenovo-devs/proprietary_vendor_lenovo

    2020-09-06
    • Update Lineage code
    • Fixed FM radio issue
    • Fixed issues on 8704F (wifi only version), when charger cable unplugged (please report if it really works this time, I dont have wifi only tablet to test)
    mailru: lineage-17.1-20200906-UNOFFICIAL-TB8704.zip
    gdrive: lineage-17.1-20200906-UNOFFICIAL-TB8704.zip
    boot.img for TB-8704V: boot-los17.1-tb8704v-20200531.img (source code)

    Previous versions:


    How to install
    You have to had TWRP installed from this thread TWRP and ROOT for Tab 4 8/10 (Plus) (TB-8704X/F/V,TB-X704L/F, TB-8504X/F, TB-X304L/F)

    In TWRP clean Data if you coming from stock ROM and do Install of this ROM. If you have android 8 stock rom installed you have to format Data with data loss, because used encryption is incompatible with android 7.1

    TB-8704V (Verizon)
    If you have TB-8704V tablet, you have to additionaly flash boot.img from link above after rom intsallation. This tablet has some hardware differences from x and f and requires custom kernel to work,

    Thanks
    Big thank to @mistersixt, who donated $$ for device.


    XDA:DevDB Information
    [ROM][UNOFFICIAL][10.0][tb8704f/x/v] LineageOS 17.1 for Lenovo TAB 4 8 plus, ROM for the Lenovo Thinkpad Tablet

    Contributors
    highwaystar_ru
    Source Code: https://github.com/lenovo-devs/android_kernel_lenovo_msm8953

    ROM OS Version: Android 10
    ROM Kernel: Linux 3.10.x
    Based On: LineageOs

    Version Information
    Status: Testing

    Created 2020-05-31
    Last Updated 2020-05-31
    11
    TWRP 3.4.0-0

    In case anyone is interested I updated TWRP to 3.4.0-0

    I can confirm that it works on the TB-8704X and hopefully it's work on the F and V as well.

    https://forum.xda-developers.com/showpost.php?p=81627509&postcount=2031
    10
    Here is the last june 2021security patch update.
    Finally patch serious security vulnerability in Qualcomm MSM, the vulnerability CVE number is CVE-2020-11292.

    10
    lineage-17.1-20200725-UNOFFICIAL-TB8704

    Hi, I compiled a new build which contains audio.deep_buffer.media=false

    https://mega.nz/folder/0ZV2SSbC#HjNloMp7OsJpB93H_zdIMw

    Source Code:
    Github
    9
    lineage-17.1-20200713-UNOFFICIAL-TB8704

    Hi, latest build available with the July security patch.

    All I did was sync the repo and build - the latest patch was added by the LOS team.

    Dirty flash and clean flash was fine and everything seems to be working.

    Download lineage-17.1-20200713-UNOFFICIAL-TB8704.zip

    I can only test this on my TB-8704X so hopefully it'll work with the with the F and V variants as well.

    Flash my TWRP as it's been updated with the latest TB-8704 kernel.