✗ 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_11.3.1_15E302_Restore.ipsw |
| Filesize | 2.6 GiB |
| SHA256sum | 025955983f7fdbf2cc4f3207c4c2d1e25f872cc085763d47f5f50e3792c5bd34 |
| MD5sum | 8044953b5614a5c52f8ec80ad5e1676e |
| SHA1sum | dae0911e040a9717233e4c751939985ede6c7bf8 |
| Identifier | iPhone7,2 |
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