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 | iPad_Fall_2018_12.1.4_16D57_Restore.ipsw | 
| File Size | 3.43 GB | 
| SHA256sum | |
| MD5sum | ed9bc716c5f1fd1e7a89b14ca25d59e1 | 
| SHA1sum | 3da983e25d4e72624885048bb3f5895965fc150f | 
| Identifier | iPad8,5 | 
cd ~/Downloads.idevicerestore -e iPad_Fall_2018_12.1.4_16D57_Restore.ipsw and press Enter.