Choose an IPSW for iOS 3.1

• IPSWs
• OTAs

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