Choose an IPSW for iOS 3.1

Signed IPSW files can be restored via iTunes. Unsigned IPSWs cannot currently be restored via iTunes.

Unsigned IPSWs

iPhone 3G[S] iPhoneOS 3.1 (7C144) 3rd September 2009 321 MB iPhone2,1_3.1_7C144_Restore.ipsw
iPhone 2G iPhoneOS 3.1 (7C144) 3rd September 2009 253 MB iPhone1,1_3.1_7C144_Restore.ipsw
iPhone 3G iPhoneOS 3.1 (7C144) 3rd September 2009 253 MB iPhone1,2_3.1_7C144_Restore.ipsw
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