5.1 Firmware Download
5.1 firmware download — compatible with 16 devices, released Unknown, build 9B176、9B179、9B179b. Download links direct to Apple servers, with signing status verification and SHA-256/SHA-1/MD5 checksum validation. This version is no longer signed, for downgrade reference only.
iPhone (4)
4 devices support this version
| Device | Identifier | Build | Size | Signing | Action |
|---|---|---|---|---|---|
| iPhone 3GS | iPhone2,1 | 9B176 | 687 MB | Unsigned | Details → |
| iPhone 4 (CDMA) | iPhone3,3 | 9B176 | 791 MB | Unsigned | Details → |
| iPhone 4 (GSM) | iPhone3,1 | 9B176 | 784 MB | Unsigned | Details → |
| iPhone 4s | iPhone4,1 | 9B179 | 803 MB | Unsigned | Details → |
iPad (8)
8 devices support this version
| Device | Identifier | Build | Size | Signing | Action |
|---|---|---|---|---|---|
| iPad 1 | iPad1,1 | 9B176 | 726 MB | Unsigned | Details → |
| iPad 2 (CDMA) | iPad2,3 | 9B176 | 743 MB | Unsigned | Details → |
| iPad 2 (GSM) | iPad2,2 | 9B176 | 737 MB | Unsigned | Details → |
| iPad 2 (Mid 2012) | iPad2,4 | 9B176 | 729 MB | Unsigned | Details → |
| iPad 2 (WiFi) | iPad2,1 | 9B176 | 729 MB | Unsigned | Details → |
| iPad 3 (CDMA) | iPad3,2 | 9B176 | 1.06 GB | Unsigned | Details → |
| iPad 3 (GSM) | iPad3,3 | 9B176 | 1.06 GB | Unsigned | Details → |
| iPad 3 (WiFi) | iPad3,1 | 9B176 | 1.04 GB | Unsigned | Details → |
Apple TV (2)
2 devices support this version
| Device | Identifier | Build | Size | Signing | Action |
|---|---|---|---|---|---|
| Apple TV 2G | AppleTV2,1 | 9B179b | 487 MB | Unsigned | Details → |
| Apple TV 3 | AppleTV3,1 | 9B179b | 540 MB | Unsigned | Details → |
iPod touch (2)
2 devices support this version
| Device | Identifier | Build | Size | Signing | Action |
|---|---|---|---|---|---|
| iPod touch 3 | iPod3,1 | 9B176 | 656 MB | Unsigned | Details → |
| iPod touch 4 | iPod4,1 | 9B176 | 750 MB | Unsigned | Details → |