I used many months my Raspberry Zero W (Hyperbian, Alpha.9) in combination with an usb grabber and WLed strips - it works perfectly.
But last week I updated my HyperBian to alpha.11.
Now I have the problem that every time I connect my hyperion to the hdmi splitter the signal (from fire tv stick) to my TV is lost.
I guess that this problem comes with the alpha.11 - but to be sure I would like to downgrade hyperion to alpha.9
My Question is: how can I downgrade - or: how can I install the alpha.9?
(Yesterday I spend some hours in this topic, but I am not a linux expert - so I was not successfull :/)
Many thanks in advanced!!