This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 24 March 2020 |
| Upload Date | 10 March 2020 |
| File Name | iPhone_4.0_64bit_12.4.6_16G183_Restore.ipsw |
| File Size | 2.82 GB |
| SHA256sum | fa6f7a4a3574afb6086b4c10c0865de7e94e971c4e8fcd5f39c0388d9595cac6 |
| MD5sum | 8731dd96997eaf758b981793fe3ba60b |
| SHA1sum | 93e4eff75a61b8729cf9b18e1fb5aa48e7f13581 |
| Identifier | iPhone6,2 |
cd ~/Downloads.idevicerestore -e iPhone_4.0_64bit_12.4.6_16G183_Restore.ipsw and press Enter.