1. use JL_Cmder to do a full wipe: BlackBerryForums.com : Your Number One BlackBerry Community
2. It's not from AT&T, but this is the latest version, and it will work just fine as long as you follow the directions: http://www.blackberryforums.com/gene...ilanguage.html
3. DM 4.2 SP2 or higher is fine.
4. Buying a BlackBerry off eBay - BlackBerryFAQ
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