Follow the steps explained below to Upgrade iPhone 4 to iOS 5 firmware . Latest version of Redsn0w 0.9.9b5 is used here to Preserve Baseband and create custom ipsw used for upgrading to iOS 5 without changing original baseband . This tutorial will be useful for those who rely on Ultrasn0w or Gevey Sim based […]

Related More :

  1. Preserve Baseband on iPhone 4 during iOS 5 Upgrade – Windows Users
  2. Upgrade to iOS 4.3 Preserving Baseband
  3. How to Upgrade iPhone 4 to iOS 5


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