The Problem is, i'm not a developer at all. I only found out that the Medion Lifetab is based on the same HW and on the same android device tree. just flashing the Jolla Tab Image, like we do on Aigo X86 is not working (i tried alredy), because Medion uses different partition layout and different Display resolution. But somebody, who is familiar with Jolla HADK can built an Sailfish Image. What i will try is to boot the Onda Tablet Image from the SD-Card. If it will succeed - i will post it here.