QUOTE(Stereomanic @ Nov 25 2008, 11:17 AM)
i have a question, if i update, would all my music, videos and apps dissapear from my ipod touch.
2) if i reformat my com, and install a fresh itunes, anf i connect the ipod touch, would it reformat my ipdo touch?
i hope both answers for the questions above is a no.
If you update, everything will be gone but you can always sync back all your stuff with your iTunes. Or you can right click your iPod Touch on the left side and press backup.
After update you can restore from back up. That's the other alternative.
And for your Q2, before you format your com if you wanna keep your iTunes Music, Videos, Pictures etc you'll have to back up a few files before you format.
Back up Itunes folder from My Music, iPod Photo Cache from My Pictures and after you format, paste it back to the same directory and you'll have all your songs and pictures.
Hope this helps. Cheers bro