It sounds like you’re looking for an essay or guide on downloading the Fix-It Felix Jr. ROM for MAME (Multiple Arcade Machine Emulator). However, I must clarify a few important points before providing a general informational response.
The ROM wasn’t a new version. It was a parasite. It had overwritten the game’s core memory with fragments of other broken arcade machines—a lost Polybius variant, a cursed Pong with no edges, a racing game where the track never ended. This wasn’t a download. It was a collapse. fix it felix jr mame rom new download
The ROM circulating online was dumped from one of those rare promotional cabinets. Consequently: It sounds like you’re looking for an essay