This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 14 December 2020 | 
| Upload Date | 09 December 2020 | 
| File Name | iPad_64bit_TouchID_14.3_18C66_Restore.ipsw | 
| File Size | 4.15 GB | 
| SHA256sum | e0afcae263c0348d9b52e5f9f7d135fe6979602eca6553627213800466e6a27e | 
| MD5sum | 341df016af861f629698387f76209c4b | 
| SHA1sum | 2b60d3816812c0e9f714bc9814058fd8ce8857e3 | 
| Identifier | iPad5,3 | 
cd ~/Downloads.idevicerestore -e iPad_64bit_TouchID_14.3_18C66_Restore.ipsw and press Enter.