No 5.1 Custom Rom works

Hi there,

I do have Problems of getting 5.1 Roms running.

Flashing via Twrp works and so does the reboot.

After selecting my country and wifi it stucks at "checking connection, this can take a while"

I found a workaround to take Chinese as a language, but that doesnt work either.


Have you any idea what the problem is?


//edit:

I did not tried it with another Android version, only 5.1!