3.1 Firmware Download
3.1 firmware download — compatible with 3 devices, released Unknown, build 7C144. 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 (3)
3 devices support this version
| Device | Identifier | Build | Size | Signing | Action |
|---|---|---|---|---|---|
| iPhone 2G | iPhone1,1 | 7C144 | 241 MB | Unsigned | Details → |
| iPhone 3G | iPhone1,2 | 7C144 | 242 MB | Unsigned | Details → |
| iPhone 3GS | iPhone2,1 | 7C144 | 306 MB | Unsigned | Details → |