if its already jailbroken than you will need to unjailbreak it (take the jailbreak off)
then when its normal ;go to iTunes go to and click update and cancel it because it will erase every thing than push shift+restore and it will update .then when its done install your jailbreak program:blackra1n,redsn0w,etc.
Not without erasing the jailbreak.
you must restore itouch then update. Sorry!
if you want it to be jailbroken then no,if not yes
The iPod Touch should not delete things when you update it. All content should remain on the iPod (unless you have a jailbroken iPod, in which case it will remove all non-App Store apps and other jailbroken features).
Unless you want to brick it, don't. Wait until there's an update to your "Jailbreak" and then update. BE SURE TO UNJAILBRAKE YOUR IPOD BEFORE UPDATING!!
Yes, you can put music on a jailbroken iPod Touch.
yes
yes it can but not if you go and download the new update because then it will give your ipod touch some minor glitches which include crashing and not turing on for a couple of minutes
you cant
Well the no matter what you do. Update, Restore, and etc, you have to rejailbreak it.
Yes, the iPod Touch with the 2.0 software can be jailbroken.
yes restore it