✗ 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_5.5_11.3.1_15E302_Restore.ipsw |
| Filesize | 2.7 GiB |
| SHA256sum | f808b7981e5b2b8b6fd2bfddbeedf2ad965d77316297860d6b492f3a0cc59920 |
| MD5sum | d4a52753383801ea99b802ee67cfd842 |
| SHA1sum | 706a0d92aaa759aef92e8622d8807b28bf05900d |
| Identifier | iPhone8,2 |
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