Signed IPSW files can be restored via Finder, the Apple Devices app, iTunes, or idevicerestore. Unsigned IPSWs cannot currently be restored to.
| ✗ | iOS 6.1.5 (10B400) | November 15, 2013 | 848 MiB | iPod4,1_6.1.5_10B400_Restore.ipsw |
| ✗ | iOS 6.1.3 (10B329) | March 13, 2013 | 848 MiB | iPod4,1_6.1.3_10B329_Restore.ipsw |
| ✗ | iOS 6.1.2 (10B146) | February 16, 2013 | 847 MiB | iPod4,1_6.1.2_10B146_Restore.ipsw |
| ✗ | iOS 6.1 (10B144) | January 24, 2013 | 848 MiB | iPod4,1_6.1_10B144_Restore.ipsw |
| ✗ | iOS 6.0.1 (10A523) | October 29, 2012 | 840 MiB | iPod4,1_6.0.1_10A523_Restore.ipsw |
| ✗ | iOS 6.0 (10A403) | September 14, 2012 | 840 MiB | iPod4,1_6.0_10A403_Restore.ipsw |
| ✗ | iOS 5.1.1 (9B206) | April 27, 2012 | 750 MiB | iPod4,1_5.1.1_9B206_Restore.ipsw |
| ✗ | iOS 5.1 (9B176) | February 29, 2012 | 750 MiB | iPod4,1_5.1_9B176_Restore.ipsw |
| ✗ | iOS 5.0.1 (9A405) | November 8, 2011 | 778 MiB | iPod4,1_5.0.1_9A405_Restore.ipsw |
| ✗ | iOS 5.0 (9A334) | October 7, 2011 | 762 MiB | iPod4,1_5.0_9A334_Restore.ipsw |
| ✗ | iOS 4.3.5 (8L1) | July 21, 2011 | 650 MiB | iPod4,1_4.3.5_8L1_Restore.ipsw |
| ✗ | iOS 4.3.4 (8K2) | July 14, 2011 | 650 MiB | iPod4,1_4.3.4_8K2_Restore.ipsw |
| ✗ | iOS 4.3.3 (8J2) | May 2, 2011 | 650 MiB | iPod4,1_4.3.3_8J2_Restore.ipsw |
| ✗ | iOS 4.3.2 (8H7) | April 12, 2011 | 650 MiB | iPod4,1_4.3.2_8H7_Restore.ipsw |
| ✗ | iOS 4.3.1 (8G4) | March 24, 2011 | 650 MiB | iPod4,1_4.3.1_8G4_Restore.ipsw |
| ✗ | iOS 4.3 (8F190) | March 3, 2011 | 653 MiB | iPod4,1_4.3_8F190_Restore.ipsw |
| ✗ | iOS 4.2.1 (8C148) | November 18, 2010 | 609 MiB | iPod4,1_4.2.1_8C148_Restore.ipsw |
| ✗ | iOS 4.1 (8B118) | September 21, 2010 | 580 MiB | iPod4,1_4.1_8B118_Restore.ipsw |
| ✗ | iOS 4.1 (8B117) | August 31, 2010 | 580 MiB | iPod4,1_4.1_8B117_Restore.ipsw |