This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 19 January 2016 |
| Upload Date | 12 January 2016 |
| File Name | iPad4,9_9.2.1_13D15_Restore.ipsw |
| File Size | 1.85 GB |
| SHA256sum | fbd48bf1764d5b23eaf8b205506ef3902dd787b69081187e7cfdf7f0b3d5e95a |
| MD5sum | d85f9c0fa8bfad0d31310915a4d60683 |
| SHA1sum | 2e079ae286d2905d754a9c57e31e0af65771940f |
| Identifier | iPad4,9 |
cd ~/Downloads.idevicerestore -e iPad4,9_9.2.1_13D15_Restore.ipsw and press Enter.