This firmware is not signed. This means you cannot restore to it in iTunes.
Release Date | 03 May 2021 |
Upload Date | 29 April 2021 |
File Name | iPhone_4.0_64bit_12.5.3_16H41_Restore.ipsw |
File Size | 2.81 GB |
SHA256sum | da37fadd2b88f8e1c8a762fc983cd290d245034204edd8cd36cff6f14cd720df |
MD5sum | c4e1e5918c70a7f606262262386d662f |
SHA1sum | 0c8ced95dd54b93c057b4b2169c513bf865f3b64 |
Identifier | iPhone6,1 |
cd ~/Downloads
.idevicerestore -e iPhone_4.0_64bit_12.5.3_16H41_Restore.ipsw
and press Enter.