iPhone 3GS Firmwares
| Version | Build | Release date | Size | Signed | Jailbreak | Details |
|---|---|---|---|---|---|---|
| iOS 6.1.6 Latest | 10B500 | Feb 21, 2014 | 784.85 MB | Signed | None | Details |
| iOS 6.1.3 | 10B329 | — | 784.87 MB | Unsigned | None | Details |
| iOS 6.1.2 | 10B146 | — | 784.50 MB | Unsigned | None | Details |
| iOS 6.1 | 10B141 | — | 784.52 MB | Unsigned | None | Details |
| iOS 6.0.1 | 10A523 | — | 780.42 MB | Unsigned | None | Details |
| iOS 6.0 | 10A403 | — | 780.43 MB | Unsigned | None | Details |
| iOS 5.1.1 | 9B206 | — | 687.02 MB | Unsigned | None | Details |
| iOS 5.1 | 9B176 | — | 687.03 MB | Unsigned | None | Details |
| iOS 5.0.1 | 9A405 | — | 684.91 MB | Unsigned | None | Details |
| iOS 5.0 | 9A334 | — | 668.71 MB | Unsigned | None | Details |
| iOS 4.3.5 | 8L1 | — | 420.17 MB | Unsigned | None | Details |
| iOS 4.3.4 | 8K2 | — | 420.15 MB | Unsigned | None | Details |
| iOS 4.3.3 | 8J2 | — | 420.11 MB | Unsigned | None | Details |
| iOS 4.3.2 | 8H7 | — | 420.11 MB | Unsigned | None | Details |
| iOS 4.3.1 | 8G4 | — | 419.88 MB | Unsigned | None | Details |
| iOS 4.3 | 8F190 | — | 423.20 MB | Unsigned | None | Details |
| iOS 4.2.1 | 8C148a | — | 401.32 MB | Unsigned | None | Details |
| iOS 4.1 | 8B117 | — | 382.02 MB | Signed | None | Details |
| iOS 4.0.2 | 8A400 | — | 377.95 MB | Unsigned | None | Details |
| iOS 4.0.1 | 8A306 | — | 377.96 MB | Unsigned | None | Details |
| iOS 4.0 | 8A293 | — | 377.92 MB | Unsigned | None | Details |
| iOS 3.1.3 | 7E18 | — | 290.99 MB | Unsigned | None | Details |
| iOS 3.1.2 | 7D11 | — | 306.14 MB | Unsigned | None | Details |
| iOS 3.1 | 7C144 | — | 306.14 MB | Unsigned | None | Details |
| iOS 3.0.1 | 7A400 | — | 297.86 MB | Unsigned | None | Details |
| iOS 3.0 | 7A341 | — | 297.83 MB | Unsigned | None | Details |
Only versions Apple is currently signing can actually be installed. Download links point directly to Apple's servers.