This firmware is not signed. This means you cannot restore to it in iTunes.
Release Date | 07 February 2019 |
Upload Date | 05 February 2019 |
File Name | iPhone_4.0_64bit_12.1.4_16D57_Restore.ipsw |
File Size | 2.87 GB |
SHA256sum | |
MD5sum | e87f24838ca7f2de6d5af511c2c32921 |
SHA1sum | b09aeeeb77a514191c5b97018e7fa136482a9560 |
Identifier | iPhone8,4 |
cd ~/Downloads
.idevicerestore -e iPhone_4.0_64bit_12.1.4_16D57_Restore.ipsw
and press Enter.