There is no way to update your iPod from your iPod. You have to do it on iTunes on your computer.
You can update your iPod without selling it! First go to iTunes and plug in your iPod. Then go to your iPod summary and click "update".
You have to update via iTunes on computer
No. Once you have updated your iPod, you can't un-update it.
When you plug your ipod in to your PC or Mac, open itunes and if there is a update for the ipod it should tell and ask you whether to update and install.
You do not pay to update your iPod Touch unless the software update is to 3.0 or 3.1.
No.
No.
No, you do not. Everything will remain the same when you update your iPod when it comes to apps.
It does not, unless the update is interrupted or, you restore instead of update.
Plug your iPod into the computer to charge it and it will ask if you want to update it.
plugging the ipod to your computer and open itunes, it should prompt you about the update