Interesting, though weird that it was uploaded anonymously.
Likely due to it being a beta and wont be updated on the official firmware for a while kind of like how Redguys SA-1 and SSD-1 files were not confirmed but betas were available for them.
Also this is likely the only way I will get to experience these games running at their normal non overlclocked speed outside of getting the physical SGB2 which would likely not work as its region locked on a PAL SNES, eventhough despite it not being able to use all available SGB enhanced roms which could keep the boarders after resetting the device I think it would be awesome if later updates to the firmware made it possible to run only GBC games on it now that it doesen't have those limitations or does it?
I presume if a reset button configuration is possible in the near future it may be possible to keep the boarder when changing to a new rom though unlike the EDGB series it would always revert back to the SD2SNES menu... now I think of it wouldn't it be cool if their was a glitch where the boarder would load up with the SD2SNES menu inside of it.
And lastly I think SD2SNES users who had the original versions will find this ugrade a lot easier to update GB roms on it as you wont need to ply out the SD card each and everytime thanks to the spring that was omitted in later FX PAK versions.