✓ This firmware is signed. This means that you can restore to it in iTunes.
| Release Date | 26th January 2026 |
|---|---|
| Upload Date | 22nd January 2026 |
| Filename | iPhone_4.0_64bit_12.5.8_16H88_Restore.ipsw |
| Filesize | 3.02 GB |
| SHA256sum | 65bb7235c1c8c76c951a37c76746c3e7015fdbe9f05850e1a4705103c1f00238 |
| MD5sum | 824ff1159268627992425fde3caf243b |
| SHA1sum | 283ec31c183735a412f1f890ecaf556c4cc7a35c |
| Identifier | iPhone6,1 |
This update extends the certificate required by features such as iMessage, FaceTime, and device activation to continue working after January 2027.
For information on the security content of Apple software updates, please visit this website:
https://support.apple.com/100100