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Message: <blockquote data-quote="kosmoistheman" data-source="post: 2243901" data-attributes="member: 301217">I have a 3G iPhone (unactivated) that a friend just gave me. He upgraded to the new iPhone 4. He wiped it clean of all apps and data. It only has the "connect to iTunes" indicator and the emergency call feature loaded onto it. I want to use it like an iTouch for now (download music, apps and use the wi-fi feature) but might want to activate it later using either my T-Mobile account or an AT&T or Verizon plan. If I connect it to my laptop and download the latest edition of OS for iPhones, will it prevent me from unlocking it or jailbreaking it later?How can I download an earlier version of the OS (prior to OS 4) without the wi-fi or data plan activated?  When I hook the phone up to iTunes, it will ask to search for updates and it will go directly to OS 4.</blockquote>