Thank you very much. I found an old broken Gameboy Pocket in Japan that arrived yesterday looks a bit small to be honest even with the other 2.2″ screen I’m testing at the moment. I may have to go with the Original Gameboy. I managed to get the scrren working with an old pigrrl image and a bit of tweaking.
I tried your img file for retropie last night and it works partially with my screen. I’m not surprised it doesn’t work fully to be honest. I tried to SSH into it and I get an error I also tried to connect my monitor to it via HDMI but the resolution is to low for my screen. So I’m a bit stuck.