Tried 1.4 and the vertical blinking screen is still there.
I noticed that when playing Hang on, it is located on my 9331 screen exactly at the right of the screen where the road disappear (easy to see when you drive on the left of the road). The tearing seems to be gone away.
I also noticed that there are some bugs in some games i tried like sonic or rastan where you can move through walls from time to time.
Those bugs are not easy to track down.
I found that Sonic 2 (v 2.2) reset really often. This doesn't happen in smsplus by reesy.
Thanks for that emu hitchhikr
Joyeux no?l !