I bought a N3 off ebay installed it and everything worked except the cd/dvd mechanism wouldnt load. Sent it back and the guy said he couldn't fix it but found an N2 in better shape and had it upgraded to an N3. My question is does this upgrade make this unit an actual N3 or am I getting taken. Thanks for any help

Yes. As long as the brain indicates it is an N3.

Thanks for the quick reply