This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 20 December 2018 |
| Upload Date | 18 December 2018 |
| File Name | iPhone_5.5_12.1.2_16C104_Restore.ipsw |
| File Size | 3.03 GB |
| SHA256sum | 2868ddde772109e068b81f634011d98cdd66ae62e01d160c94b7dcdd55219c5d |
| MD5sum | 06b04f516c60cf59e0fdb23935c30f15 |
| SHA1sum | 67eba03ebba34734305523cd88ebc1c620c3301b |
| Identifier | iPhone8,2 |
cd ~/Downloads.idevicerestore -e iPhone_5.5_12.1.2_16C104_Restore.ipsw and press Enter.