iPhone 3G Firmware Download
iPhone 3G firmware download — 16 firmware versions, IPSW direct download from Apple servers, with signing status verification and SHA-256/SHA-1/MD5 checksum validation. Released unknown, latest version 4.2.1 (build 8C148). 2 signed firmware versions currently available for restore.
Signed Firmware
Still verified by Apple servers, can be restored
2 versions
Unsigned Firmware
No longer verified by Apple, for downgrade reference only
14 versions
| Version | Build | Size | Released | Downloads | Signing | Action |
|---|---|---|---|---|---|---|
| 4.0.2 | 8A400 | 305 MB | -- | Unsigned | Details → | |
| 4.0.1 | 8A306 | 305 MB | -- | Unsigned | Details → | |
| 4.0 | 8A293 | 292 MB | -- | Unsigned | Details → | |
| 3.1.3 | 7E18 | 228 MB | -- | Unsigned | Details → | |
| 3.1.2 | 7D11 | 242 MB | -- | Unsigned | Details → | |
| 3.1 | 7C144 | 242 MB | -- | Unsigned | Details → | |
| 3.0.1 | 7A400 | 230 MB | -- | Unsigned | Details → | |
| 3.0 | 7A341 | 230 MB | -- | Unsigned | Details → | |
| 2.2.1 | 5H11 | 246 MB | -- | Unsigned | Details → | |
| 2.2 | 5G77 | 246 MB | -- | Unsigned | Details → | |
| 2.1 | 5F136 | 238 MB | -- | Unsigned | Details → | |
| 2.0.2 | 5C1 | 249 MB | -- | Unsigned | Details → | |
| 2.0.1 | 5B108 | 249 MB | -- | Unsigned | Details → | |
| 2.0 | 5A347 | 225 MB | -- | Unsigned | Details → |