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I have a iphone running on the 1.4 firmware and wanting to update it to newest firmware. The phone is unlocked and jailbroke. I am wanting to know if I update it through itunes will the phone lock? I have heard that it will. If anyone could help me out it would be appreciated.
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Yes it will be unjailbroken and locked again. Use either pwnagetool (mac) or winpwn (pc) to create a custom restore for a 2.0 update. You must update to 2.0 first before anything else.
Tutorials in the tutorials section obviously.
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1.4? 1.1.4 you mean?

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http://www.iphone-hacks.com/forums/view … hp?id=1392 > tut for pc
http://www.iphone-hacks.com/forums/view … hp?id=1301 > tut for mac
please ensure your using the latest software's
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