This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 15 July 2020 |
| Upload Date | 09 July 2020 |
| File Name | iPhone_4.0_64bit_12.4.8_16G201_Restore.ipsw |
| File Size | 2.81 GB |
| SHA256sum | 185c931ef1ba90c6a38694d4ecb77db03e9ea8f192a33c437892983efc45758e |
| MD5sum | 28517a55d9e683d24337d63745a16a0f |
| SHA1sum | 08dfb2e3e59225ea30ba7a601805f1f3b01a78b6 |
| Identifier | iPhone6,1 |
cd ~/Downloads.idevicerestore -e iPhone_4.0_64bit_12.4.8_16G201_Restore.ipsw and press Enter.