The SF7EXP.B01 is the Normal SF6 bios 4B0A
The SF7EXP.B02 is the pOSSIBLE BETA OR LAST  SF6 bios 4B0B
Hope the exploit worked on the SF6

The SF0SF2.b01 is also an attempt to get the newer 4B0b bios with anoth exploit file I found on the site.Dont know if it worked