Restore the iPod touch?

I have an ipod touch 2nd generation with a 3.0 system update.I the password so it is necessary to restore Will I lose it.But the update and revert to the version of the software that came with when I bought it? plzz help!

If you have backed Prior to this and have a backup backup too as not, if not backed up before the password, then you need to restore and not lose its update, but you'll miss everything else in it, like music, photos, contacts and notes.

Ipod touch 8gb Wont Restore Wrong passcode !! Bricked !

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