This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 22 January 2019 |
| Upload Date | 11 January 2019 |
| File Name | iPhone_5.5_P3_12.1.3_16D39_Restore.ipsw |
| File Size | 3.27 GB |
| SHA256sum | |
| MD5sum | cd518440452eb3a052925e211ae2f6b2 |
| SHA1sum | 1ddf6cb98fe0da62d91408c3eeb641eb2bf496e3 |
| Identifier | iPhone9,2 |
cd ~/Downloads.idevicerestore -e iPhone_5.5_P3_12.1.3_16D39_Restore.ipsw and press Enter.