To 'unjailbreak' an iPod Touch, you have to do a system restore, which is available in the iPod Touch home menu in iTunes. This will erase all content that is on the iPod Touch, including bookmarks in Safari and contacts in the Contacts.
Yes iTunes>(iPod Touch Name)>Restore
plug it into itunes and hit restore
You hit the reset button.
Yes I recently jailbroke my iPod 2nd gen and all the apps I got off iTunes or the AppStore didn't get deleted
how to fix burned out light on ipod touch
you won't get any more free apps and the things you used to have when you jailbroke it. You will also improve the speed your ipod works at and hopefully, the battery percentage will incease.
yes it can.
Yes, updating the software of an iPod undoes the Jailbreak.
All you have to do is just hit the reset button.
It depends on the problem you are having with your iPod Touch. Please be more specific next time as to what is wrong with your iPod Touch.
No