Choose an IPSW for iOS 4.2.1

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

Signed IPSWs

iPod touch 2G iOS 4.2.1 (8C148) 18th November 2010 364 MB iPod2,1_4.2.1_8C148_Restore.ipsw
iPhone 3G iOS 4.2.1 (8C148) 18th November 2010 339 MB iPhone1,2_4.2.1_8C148_Restore.ipsw

Unsigned IPSWs

Apple TV 2G iOS 4.2.1 (8C154) 13th December 2010 280 MB AppleTV2,1_4.2.1_8C154_Restore.ipsw
iPhone 3G[S] iOS 4.2.1 (8C148a) 21st November 2010 421 MB iPhone2,1_4.2.1_8C148a_Restore.ipsw
iPod touch 4 iOS 4.2.1 (8C148) 18th November 2010 638 MB iPod4,1_4.2.1_8C148_Restore.ipsw
iPad 1 iOS 4.2.1 (8C148) 18th November 2010 578 MB iPad1,1_4.2.1_8C148_Restore.ipsw
iPhone 4 (GSM) iOS 4.2.1 (8C148) 18th November 2010 655 MB iPhone3,1_4.2.1_8C148_Restore.ipsw
iPod touch 3 iOS 4.2.1 (8C148) 18th November 2010 408 MB iPod3,1_4.2.1_8C148_Restore.ipsw
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