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[ROM][UNOFFICIAL][7.1.2][tb8704f/x/v] LineageOS 14.1 for Lenovo TAB4 8 plus

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Mar 14, 2018
Not listed as broken, but not working for me is device encryption. If I select the option to encrypt from Settings the device reboots to the encryption progress screen for just a moment. Then it reboots normally to Lineage. The device isn't encrypted after this occurs.


New member
May 27, 2021
Thank you for the rom. it is a very nice rom.
I have not found any issue using it for a week.
only issue I found was my tablet, which is a verizon version, can not read sim cards. on stock firmware i was able to use it.
it would be very helpful if you could help me make sim cards usable with this rom.
Thanks in advance

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  • 14

     * 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 8 (oreo), 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
    FM radio
    USB and WLAN tethering
    Fingerprint sensor
    Permissive selinux
    You tell me

    Source code:
    device : https://github.com/HighwayStar/android_device_lenovo_TB8704
    kernel: https://github.com/HighwayStar/android_kernel_lenovo_tb8704
    vendor: https://github.com/HighwayStar/android_vendor_lenovo_TB8704

    • Fixed issue with OTG
    • Enabled kernel config CONFIG_IP_NF_TARGET_TTL (needed for tethering with some operators)
    • Updated Lineage code
    mailru: lineage-14.1-20200102-UNOFFICIAL-TB8704.zip
    gdrive: lineage-14.1-20200102-UNOFFICIAL-TB8704.zip

    Previous versions:

    • Added more device names to allow to work with different twrp builds (this should resolve error 7 on install)
    • Added thermal configuration
    • Enabled exfat and ntfs filesystems
    • Fixed couple of crashes on wifi only tablet
    mailru: lineage-14.1-20190714-UNOFFICIAL-TB8704.zip
    gdrive: lineage-14.1-20190714-UNOFFICIAL-TB8704.zip

    • first release
    mailru: lineage-14.1-20190713-UNOFFICIAL-TB8704.zip
    gdrive: lineage-14.1-20190713-UNOFFICIAL-TB8704.zip

    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

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

    XDA:DevDB Information
    [ROM][UNOFFICIAL][7.1.2][tb8704f/x/v] LineageOS 14.1 for Lenovo TAB4 8 plus, ROM for the Lenovo Thinkpad Tablet

    Source Code: https://github.com/HighwayStar/android_kernel_lenovo_tb8704

    ROM OS Version: 7.x Nougat
    ROM Kernel: Linux 3.10.x
    Based On: LineageOs

    Version Information
    Status: Testing

    Created 2019-07-13
    Last Updated 2019-07-14
    This is great - thank you @highwaystar_ru for your work. I'll test it on my TB-8704X today. Are there plans on upgrading to LineageOS 15.1 or even 16?

    Yes, I'm planning to integrate it with https://github.com/lenovo-devs and build Lineage 16.0 soon. There will be not many updates on 14.1, I will upload one updated build today, found that current is incompatible with linked twrp (I tested it only with my own twrp build).
    • Added more device names to allow to work with different twrp builds (this should resolve error 7 on install)
    • Added thermal configuration
    • Enabled exfat and ntfs filesystems
    • Fixed couple of crashes on wifi only tablet
    Would you say I could use it as daily driver?

    Absolutely. I've been using it without any issues. Battery is good also. The only thing I haven't done with it yet is play games and cast.