Atari800 3.1.3 — fixes the black screen on Atari 5200 games that regressed because the core was never re-released after the #606 fix merged; the fix was present in the app bundle but the core updater still pointed to the old 3.1.2 binary.
Distributed via the in-app core updater — not a user-facing download. If you are looking to install OpenEmu-Silicon, see the latest release.