4.0 Firmware Download
4.0 firmware download — compatible with 5 devices, released Unknown, build 8A293. 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 3G | iPhone1,2 | 8A293 | 292 MB | Unsigned | Details → |
| iPhone 3GS | iPhone2,1 | 8A293 | 378 MB | Unsigned | Details → |
| iPhone 4 (GSM) | iPhone3,1 | 8A293 | 579 MB | Unsigned | Details → |
iPod touch (2)
2 devices support this version
| Device | Identifier | Build | Size | Signing | Action |
|---|---|---|---|---|---|
| iPod touch 2G | iPod2,1 | 8A293 | 315 MB | Unsigned | Details → |
| iPod touch 3 | iPod3,1 | 8A293 | 366 MB | Unsigned | Details → |