Thanks for your replys.
@ ingbrzy: yes, i flash it and then i try to boot with " fastboot boot twrp.img" but then MIUI starts.
@br3tty: thanks, i try your way at the evening when i'm at Home.
Hello, same problem for me.
I flash the twrp with fastboot, then try to boot with fastboot, but then MIUI starts. No way to come in twrp.
Where ist the mistake, any Idea?
Heiko