1) My 3GS is currently running JB 3.0, is it worth upgrading to JB 3.1.2?
2) I JB'd with red snow, found it very reliable, if it's worth upgrading to 3.1.2, is it worth getting hold of a Mac to use PwnageTool instead of Blackra1n?
3) When I JB'd with red snow, I didn't lose any of my apps/music/numbers/settings etc, will PwnageTool or Blackra1n change anything? Best to backup all Cydia apps too?
I found jailbreaking easy when I did it before, but just don't want to make my iPhone less reliable and lose my data, etc esp as my music is manually sync'd.