I am running a fat ps3 with REBUG 3.55.2 I was on their webpage as it's been awhile since I touched my PS3 and heard a lot has changed, either way I didn't see any upgrades for REBUG but did see a tab that said Version Spoofer. Under the tab is a version spoofer 2.0 for 3.72 and it includes download instructions,

"INSTALL:
Press L1+CROSS to INSTALL 3.72 Version Spoof files to your PS3

ACTIVATE/DEACTIVATE:
Press L1+CROSS to ACTIVATE/DEACTIVATE (System will reboot)

UNINSTALL:
Press L1+CIRCLE to UNINSTALL (this will deactivate the spoofer, remove the spoof files from dev_flash and reboot if needed)

Enjoy..

Big thanks to blastleaf for the artwork."

However here is where I get lost, it also says it doesn't work on REBUG. How can I play 3.72 games and why is the Version Spoofer on REBUG's page if it doesn't work, etc...?