Display MoreI am not IT educated, not a "pro", not a coder but... some suggestions:
1) Change HDMI cable and see if things improve (not sure about this but try...).
2) In case your STi 7111 STB has a corrupted flash, try installing the image on a fast USB stick.
Use Image Manager by Vasiliks for that! (In that case, you can easily install 3 images - see my article about how exactly...)
All info is here: Alien1/2 or STi 7111/7162 PurE2 flashing and setup procedure...
And here: How To Use Image Manager Plugin on All Spark Receivers
Good luck!
Thanks for your quick response. I will try a new HDMI cable and see what happens. Do you know any software I can use to see if my flash is (partially) corrupted?