I have my iPod Touch 4G on redsn0w 0.9.6b6 tethered (4.2.1) at the moment and I would like to go to an untethered version, preferably without restoring. I heard somewhere that you can upgrade directly from the tethered to the untethered without restoring, so if I can do that then I would very much like to so there's no hassle. I have Mac OSX available in a virtual machine so I can run anything I need to. Or should I just wait for the 4.3.1 untethered jailbreak? On my iPod I have AppSync and the usual stuff installed if it matters.