✗ This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore.
| Release Date | April 24, 2018 |
|---|---|
| Upload Date | April 14, 2018 |
| Filename | iPhone_4.7_P3_11.0_11.3.1_15E302_Restore.ipsw |
| Filesize | 2.7 GiB |
| SHA256sum | 7cd5687b6c3a64fbb56dcd825f2f9d776a6ded05d3751b6dceab65cd2ca5329a |
| MD5sum | 47b9fac4b26de070852a57cbe89938b7 |
| SHA1sum | 00f8a05f2e1480e3f4d92932081a35d00b7980cd |
| Identifier | iPhone9,1 |
iOS 11.3.1 improves the security of your iPhone or iPad and addresses an issue where touch input was unresponsive on some iPhone 8 devices because they were serviced with non-genuine replacement displays.
Note: Non-genuine replacement displays may have compromised visual quality and may fail to work correctly. Apple-certified screen repairs are performed by trusted experts who use genuine Apple parts. See https://support.apple.com for more information.
For information on the security content of Apple software updates, please visit this website: https://support.apple.com/kb/HT201222