Lenovo Tab K10 LTE (TB-X6C6X)

Seems to behave the same as its non-LTE counterpart. VoLTE/SIM not tested.

Lenovo Tab K10 (TB-X6C6F)

Android 11 firmware is the only firmware that seems to work currently. If the device has Android 12 already, you will need to downgrade it.

Make sure to disable dm-verity, and use fastbootd to flash the image.

Hardware support

Component	Comment
Camera	Works
Speaker / Mic	Works
Bluetooth	Works
SDCard	Works
MTP	Works
WiFi	Works
SIM / Mobile Data	Untested
VoLTE	None
Fingerprint	None
NFC	None
FM Radio	Untested

Tested By:

1. 00p513-dev
   • Model: Lenovo TB-X6C6F
   • Firmware: S000043_210430
   • Date: 2022-02-11
2. C0rn3j
   • Model: Lenovo TB-X6C6X
   • Firmware: S000043_210430
   • Date: 2022-02-11
3. C0rn3j
   • Model: Lenovo TB-X6C6F
   • Firmware: S000080_220410_ROW
   • Date: 2022-02-23

Flashing Android 11 stock firmware

The device ships with Android 11, if you didn't upgrade and are still on A11, not A12, you can skip this section.

You will need to obtain X6C6F_S000043_210430_ROW.zip (or another A11 image) and extract it, sha256 checksum is 6e3f45628712749ad5e61e36fa1fffe4dbb6ac1730af8e4fcdd5902e07083d34, then flash the following files via fastboot:

adb reboot bootloader
fastboot flash boot boot.img
fastboot flash dtbo dtbo-verified.img
fastboot flash gz gz-verified.img
fastboot flash lenovocust lenovocust.img
fastboot flash lenovoraw lenovoraw.img
fastboot flash lk lk-verified.img
fastboot flash md1img md1img-verified.img
fastboot flash scp scp-verified.img
fastboot flash spmfw spmfw-verified.img
fastboot flash sspm sspm-verified.img
fastboot flash super super.img
fastboot flash tee tee-verified.img
fastboot flash userdata userdata.img
fastboot flash vbmeta vbmeta.img
fastboot flash vbmeta_system vbmeta_system.img
fastboot flash vbmeta_vendor vbmeta_vendor.img
fastboot reboot bootloader

Disabling dm-verity

It was necessary for me to flash both a and b partitions, otherwise I got issues and a warning screen requiring to press Power ON to continue.

You might want to take a backup of those beforehand, as the recovery firmware images don't contain them directly.

# vbmeta.img was generated by avbtool
echo 'QVZCMAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABhdmJ0b29sIDEuMi4wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==' | base64 -d > vbmeta.img
fastboot flash vbmeta_a --disable-verity --disable-verification vbmeta.img
fastboot flash vbmeta_b --disable-verity --disable-verification vbmeta.img
fastboot flash vbmeta_system_a --disable-verity --disable-verification vbmeta.img
fastboot flash vbmeta_system_b --disable-verity --disable-verification vbmeta.img
fastboot reboot fastboot

Flashing a GSI

Flashing GSI should be done through fastbootd. It might be necessary to first delete the product partitions to free up space.

fastboot reboot fastboot
fastboot delete-logical-partition product
fastboot delete-logical-partition product_a
fastboot delete-logical-partition product_b
fastboot flash system system-squeak-arm64-ab-gapps.img
fastboot -w
fastboot reboot recovery

Format /data

From recovery go to 'Wipe data/factory reset' -> 'Factory data reset'

Alternatively if you boot in this state, the tablet should boot straight into recovery and offer to format /data, do so.

Reboot to system, it should boot the GSI fine.

Troubleshooting

No internet connection

There is an MTK bug that Android 13 runs into, see https://forum.xda-developers.com/t/gsi-13-lineageos-20-light.4509315/#post-87620773 for details.

The fix is to execute the following to disable the feature:

adb shell settings put global restricted_networking_mode 0

Update to a newer GSI

Similar to other devices, just dirty flash system with the newer image again should do the trick.

adb reboot fastboot
fastboot flash system system-squeak-arm64-ab-gapps.img
fastboot reboot