Help!!-ICS Upgrade not shwn in updates

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http://forum.xda-developers.com – i bought an htc incredible 2 it has gingerbread installed. i tried to update it. but update says network error. all other apps including browser uses network fine. please help. i need to update to ICS. Note-It is an unlocked Verizon mobile. not factory unlocked and I'm not in USA. (HowTos)