Ramdisk not supported

The tool can't boot a ramdisk on this device. Apple's official firmware for it is listed below.

iOS firmware — currently signed 1

Apple only allows restoring to a signed version.

iOS 5.1.1 9B206 726.05 MB Download IPSW
Archived firmware 13 no longer signed
iOS 5.1 9B176 725.97 MB Download
iOS 5.0.1 9A405 716.55 MB Download
iOS 5.0 9A334 700.25 MB Download
iOS 4.3.5 8L1 593.43 MB Download
iOS 4.3.4 8K2 593.45 MB Download
iOS 4.3.3 8J3 593.23 MB Download
iOS 4.3.2 8H7 593.33 MB Download
iOS 4.3.1 8G4 592.96 MB Download
iOS 4.3 8F190 596.82 MB Download
iOS 4.2.1 8C148 551.30 MB Download
iOS 3.2.2 7B500 456.81 MB Download
iOS 3.2.1 7B405 456.82 MB Download
iOS 3.2 7B367 456.77 MB Download