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 2

Apple only allows restoring to a signed version.

iOS 5.1.1 9B206 655.76 MB Download IPSW
iOS 4.1 8B117 370.27 MB Download IPSW
Archived firmware 16 no longer signed
iOS 5.1 9B176 655.72 MB Download
iOS 5.0.1 9A405 653.36 MB Download
iOS 5.0 9A334 637.24 MB Download
iOS 4.3.5 8L1 409.54 MB Download
iOS 4.3.4 8K2 409.56 MB Download
iOS 4.3.3 8J2 409.45 MB Download
iOS 4.3.2 8H7 409.45 MB Download
iOS 4.3.1 8G4 409.25 MB Download
iOS 4.3 8F190 413.10 MB Download
iOS 4.2.1 8C148 389.21 MB Download
iOS 4.0.2 8A400 366.41 MB Download
iOS 4.0 8A293 366.38 MB Download
iOS 3.1.3 7E18 282.16 MB Download
iOS 3.1.2 7D11 297.30 MB Download
iOS 3.1.1 7C146 297.25 MB Download
iOS 3.1.1 7C145 297.26 MB Download