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Upgrading from iPhone 4 (4.2.1 baseband 03.10.01)

Lexington

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Sep 13, 2012
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Hello,

This is the first thread in this forum and I really hope someone can help me out. I have an iPhone 4, 4.2.1 with baseband 03.10.01. Currently I'm using gevey sim card.

What I'm looking is an upgrade to iOS 5, so I've read in the forums that I have to preserve my baseband but no clue how to do it. Also will my iPhone work with the gevey sim card on iOS 5?

Thank you in advance

PS: A complete step by step guide would be welcomed since I'm a newbie :)
 
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