[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 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

Wifi

Bluetooth

GPS

Camera

Audio

FM radio

Torchlight

LED

USB and WLAN tethering

Broken

You tell me

Source code:

device : https://github.com/HighwayStar/android_device_lenovo_TB8703

kernel: https://github.com/HighwayStar/android_kernel_lenovo_msm8953/tree/cm-14.1-common

vendor: https://github.com/HighwayStar/android_vendor_lenovo_TB8703

2018-08-04

Its probably final build for Lineage 14.1, next will be 15.1. Some final preparations done:

Removed some unused blobs

Fixed grayish colors in HAL3 camera app lik Google Camera mods.

LineageOS code updated

Device tree switched to subtreeway to include some needed caf modules like camera., gps, ipa. If you use sources please note cm-14.1 branch force pushed. Old branch saved to cm-14.1-backup

ROM installation process changed. Now works with encrypted /data partition. No need to format data when coming from stock ROM. Please use new TWRP build with Boot Sign function, download below..

mailru: lineage-14.1-20180804-UNOFFICIAL-TB8703.zip

gdrive: lineage-14.1-20180804-UNOFFICIAL-TB8703.zip

Previous version:

2018-06-18

Fixed LED notification with apps with blue and green background, including battery cahrging indication > 90%

Updated Lineage code

mailru: lineage-14.1-20180618-UNOFFICIAL-TB8703.zip

gdrive: lineage-14.1-20180618-UNOFFICIAL-TB8703.zip

Download

2018-06-11

Fixed wifi and USB tethering (modem mode)

Fixed video playback, including camera video

Enabled wifi display (miracast).

Updated Lineage code

mailru: lineage-14.1-20180611-UNOFFICIAL-TB8703.zip

gdrive: lineage-14.1-20180611-UNOFFICIAL-TB8703.zip

2018-05-28

Fixed notification LED

Fixed backlight becomes darker on screen has dark content

Show TB-8703F in About Phone for WiFi tablet version

Complete disabled CapSensor, because it causing random touches, when you hold tablet

mailru lineage-14.1-20180528-UNOFFICIAL-TB8703.zip

gdrive lineage-14.1-20180528-UNOFFICIAL-TB8703.zip

2018-05-26

[*] first release

mailru: lineage-14.1-20180526-UNOFFICIAL-TB8703.zip

gdrive: lineage-14.1-20180526-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

[*] First version

mailru: twrp-tb8703-3.2.1-bootsign.img

gdrive: twrp-tb8703-3.2.1-bootsign.img

This TWRP build has special function Sign boot whihc 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][7.1.2][tb8703f/x/r/n] LineageOS 14.1 for Lenovo TAB 3 8 plus P8, ROM for the Lenovo Thinkpad Tablet

Contributors

highwaystar_ru

Source Code: https://github.com/HighwayStar/android_kernel_lenovo_msm8953/tree/cm-14.1-common

ROM OS Version: 7.x Nougat

ROM Kernel: Linux 3.10.x

Based On: LineageOs

Version Information

Status: Testing

Created 2018-05-27

Last Updated 2018-08-25