RetroHQ released a new new firmware update for their excellent Atari 7800 GameDrive flashcart. I think there were two updates in fairly quick succession as a bug preventing many games from running was fixed.
New in the latest releases:
Firmware 23.12.1473
- Added more robust detection of Mega7800
- Added support for MegaMulti START button
Firmware 24.02.0851
Fixed corrupted header bug introduced in last firmware stopping many games running.
You can download the latest version of the 7800 GameDrive Firmware by booting up your flashcart and scanning the QR code on-screen or by entering the URL.