@messayisto So will i do !

I thank you very much for your help! So its work!

A last Question: when the tablet boots there is standing something like: the device is unlocked and not sure. Should i lock the bootloader again ???

I unlocked the OEM bootloader in the Settings

@MrT10001
It is the 4Gb/64Gb Version. I don't think the bootloader is unlocked, i don't know how.

Hello,
i'm trying install ubuntu touch on a Lenovo MD 10 (TB-X306F) with android TB-X306F_S230940_240402_BMP with ubports Installer (0.11.2). USB - Debugging isk aktivated and OEM is unlocked.
When in start ubports intaller the tablet boots to fastboot mode, while "asserting unlocked bootloader variable" nothing mor happens, it hangs.

Can anybody help me? In the description i read i have to install the android 11 stock firmware. I load the linked "SP_Flash_Tool_v6.2228_Linux". But i dont know and find no help how to flash this firmware.

(Excuse my bad english)