Game genie works every time for me. PCB is thicker so it always makes contact with the games. Just enter no codes and it's as if no genie was ever inserted.
https://www.timeextension.com/news/2024/04/this-new-atari-st-racer-is-looking-seriously-smooth
I don't have a ST but this just popped up on my phone. Looks interesting.
https://segabits.com/blog/2024/04/01/sega-genesis-mini-3-announced-for-north-america-exclusively-details-and-first-10-games-revealed/
New mini Genesis coming.
Found a 5200 2 port in good shape for good price and it works. But what interested me was the pink stuff still in tact. Not seen many with the pink stuff still intact.
https://www.ebay.com/itm/235484454811