[Q] Trekstor Xiron 7.0 HD topic

Hi All,
i just bought this tablet, Trekstor Xiron 7.0 HD.
Anybody knows if there's a known way to root it? I found a post about Xiron 10 in this forum, but it's no applicable to Xiron 7.0.
I tried some tools without success (OneClickRoot,Uberizer).

Thanks!