✗ This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore.
| Release Date | January 26, 2026 |
|---|---|
| Upload Date | January 24, 2026 |
| Filename | iPhone_4.0_64bit_15.8.6_19H402_Restore.ipsw |
| Filesize | 4.9 GiB |
| SHA256sum | e22fda7ebb45d468abfaa10878eb9f2831711927fe1956971a7cfd1a386d96e1 |
| MD5sum | 829cf3c999cf979fa1860a36d638ade9 |
| SHA1sum | 897096cd1a8496889dcc001198d2daf85c74f793 |
| Identifier | iPhone8,4 |
This update provides important bug fixes and is recommended for all users.
For information on the security content of Apple software updates, please visit this website: