[Thinkpad Tablet Android Development] highwaystar_ru:
/*
* 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

You tell me

Source code:

device : https://github.com/lenovo-devs/android_device_lenovo_TB8703

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

Updated lineage code

Fixed FM radio

dpm daemon disabled for wifi version, hope this will resolve issues with wifi only tablet version (please report, I dont have wifi version to test)

mailru: lineage-17.1-20200906-UNOFFICIAL-TB8703.zip

gdrive: lineage-17.1-20200906-UNOFFICIAL-TB8703.zip

2020-06-01

Fixed boot on 8703f (wifi tablet version)

mailru: lineage-17.1-20200601-UNOFFICIAL-TB8703.zip

gdrive: lineage-17.1-20200601-UNOFFICIAL-TB8703.zip

Previous versions:

2020-05-31

Updated Lineage code

Updated system graphics and media binaries

selinux enforcing

mailru: lineage-17.1-20200531-UNOFFICIAL-TB8703.zip

gdrive: lineage-17.1-20200531-UNOFFICIAL-TB8703.zip

2020-03-31

Fixed boot issue on TB8703F (Wifi only version)

mailru: lineage-17.1-20200331-UNOFFICIAL-TB8703.zip

gdrive: lineage-17.1-20200331-UNOFFICIAL-TB8703.zip

2020-03-29

Fixed error message on boot on WiFi only tablet

Fixed issues with WiFi and Bluetooth MAC addresses

fixed other minor issues

Updated Lineage code

mailru: lineage-17.1-20200329-UNOFFICIAL-TB8703.zip

gdrive: lineage-17.1-20200329-UNOFFICIAL-TB8703.zip

2020-02-22

Initial release

mailru: lineage-17.1-20200222-UNOFFICIAL-TB8703.zip

gdrive: lineage-17.1-20200222-UNOFFICIAL-TB8703.zip

How to install

To install this you have to install TWRP using by QFIL utility, follow this instruction: https://xdaforums.com/general/general/twrp-lenovo-p8-tb-8703f-tb-8703x-t3689442/post76277192

Special TWRP build

To install and boot any custom roms and to boot it after installing mods that change boot partitition like Magisk please use this TWRP:

2018-08-25

Fixed long time to wakeup screen in TWRP

Added NTFS filesystem for sdcards

mailru: twrp-tb8703-3.2.1-20180825-bootsign.img

gdrive: twrp-tb8703-3.2.1-20180825-bootsign.img

Previous version

[*] Первая версия

mailru: twrp-tb8703-3.2.1-bootsign.img

gdrive: twrp-tb8703-3.2.1-bootsign.img

This TWRP build has special function Sign boot which you have to click after install new version of ROM or mod like Magisk. It will append stock boot signature to your boot partition. This allows to boot with locked bootloader.

TWRP with Boot Sign function screenshots:

Fortunately you dont need to unlock bootloader, because not every Lenovo tab can be unlocked. Custom kernel and ROM can be runned by appending boot.sig signature extracted from stock rom to boot.img like

cat boot.img boot.sig > boot-signed.img

It still cant be loaded by fastboot, but you always can flash it from TWRP. You can get boot.sig in my repo https://github.com/HighwayStar/android_device_lenovo_TB8703/blob/cm-14.1/twrp/recovery/root/boot.sig

XDA:DevDB Information

[ROM][UNOFFICIAL][10.0][tb8703f/x/r/n] LineageOS 17.1 for Lenovo TAB 3 8 plus P8, 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 2020-02-22

Last Updated 2020-03-31