Ipod touch 2nd generation getting unknown error -1 message while trying to update to 4.2 disabled the security still get message any suggestions?

While trying to update my ipod touch 2nd generation to ios 4.2 i get the messge this ipod could not be restored. Unknown error occured (-1). Tried updating with security software disabled, restarting both computer and ipod still same results any suggestions?

Since Apple says:
Error 1 or -1
This may indicate a hardware issue with your device. Follow Troubleshooting security software issues, and restore your device on a different known-good computer. If the errors persist on another computer, the device may need service.
It sounds like you have a hardware problem ((device may need service). Make an appointment at the Genius Bar of an Apple store.
Apple Retail Store - Genius Bar

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