How do I undo iOS 4 and go back to the original iOS the iPod Touch 2G came with?

[josephinechella]

I accidentally downloaded iOS 4 last night and it erased everything. Whenever I try to restore it restores to the same home screen with Game Center. I want to go back to the original firmware or OS it came with. Is it possible? Everytime I restore, it restores to an old iPhone that used to sync to that computer.

 

[Skull One]

You can't install iOS 4 on a iPod Touch 2nd Generation. It is physically impossible in iTunes to even start the upgrade process. I believe the last version you can install is 3.1.3 or so.