Patching code was standardized. Now all BIOS files use very similar patches. A new function was added to USA and EU BIOS (all versions) which allow you to skip the SONIC/SEGA logo by holding the "C" button on 1P controller. The capability of booting from cartridges through the CD BIOS (apply only to USA and EURO BIOSes) is now restored and should work work exactly as it did with the original BIOS. Japanese/ASIA BIOS were re-patched to make them comform with the patching style used on the USA and EURO BIOS files. Included on the package are all BIOS files I could find dumped. If you guys have anything I don't and want it patched, let me know. Commemorative post ! Edit: I do not support the use of any of these with Everdrive MD or Mega Everdrive due to a design problem with the Everdrives. Edit2: Aaaaand here's the region free BIOS for LaserActive. Special thanks to veggav(https://assemblergames.com/members/fandangos.68204/) for providing me with a LaserActive unit and TabajaraLabs(https://assemblergames.com/members/tabajaralabs.88579/) for providing me with a PAC S-10 unit that allowed me to test it in a practical way.