Atari Flashback X Custom Firmware for USB roms and boxart in AtGames Flashback and Portable Consoles Posted February 10 · Edited February 10 by Draxxon Well, no picodrive in the Sega Flashbacks. I know that rrifonas brought Mame and FBA cores over from the SNES classic, maybe thats where the PicoDrive core came from. Not sure. Here is an unpacked Genesis Flashback Update image. If you want to check out the "retro-files". SEGA-FB.rar Now Im thinking, how similar are the LEGNENDS ARCADE products and go check those again.