Yea according to SamFirmware (The site we all get our firmwares from) the JPM release is the official 2.2 Froyo release for the I9000!!
http://www.samfirmware.com/apps/blog/show/5038470-official-froyo-release-galaxy-s-
wooohoo
Twitter:
SamFirmware
Yes it seems like firmware version I9000XXJPM is official froyo release!
http://www.samfirmware.com/apps/blog/show/5038470-official-froyo-release-galaxy-s-
wooohoo
Twitter:
SamFirmware
Yes it seems like firmware version I9000XXJPM is official froyo release!