Download iOS 4.0 IPSW for iPhone, iPad and iPod Touch

Unsigned IPSWs

Apple has stopped signing these firmwares. You cannot restore or downgrade to this firmware via iTunes.
Device
Version (Build)
Release Date
Size
File name
iPod Touch 3
(iPod3,1)
4.0 (8A293)
Mar 29, 2023
0.36 GB
iPod3,1_4.0_8A293_Restore.ipsw
iPod Touch 2G
(iPod2,1)
4.0 (8A293)
Mar 29, 2023
0.31 GB
iPod2,1_4.0_8A293_Restore.ipsw
iPhone 4 (GSM)
(iPhone3,1)
4.0 (8A293)
Mar 29, 2023
0.57 GB
iPhone3,1_4.0_8A293_Restore.ipsw
iPhone 3G[S]
(iPhone2,1)
4.0 (8A293)
Mar 29, 2023
0.37 GB
iPhone2,1_4.0_8A293_Restore.ipsw
iPhone 3G
(iPhone1,2)
4.0 (8A293)
Mar 29, 2023
0.29 GB
iPhone1,2_4.0_8A293_Restore.ipsw