✗ This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore.
| Release Date | January 12, 2022 |
|---|---|
| Upload Date | January 8, 2022 |
| Filename | iPhone_4.0_64bit_15.2.1_19C63_Restore.ipsw |
| Filesize | 5.0 GiB |
| SHA256sum | 5ec386cdd86a0901f6e3f02f8dfd6f382db8708dd462bcfd29bd822f38bced67 |
| MD5sum | ed8be5f886367d9ba002021d58ace544 |
| SHA1sum | 1c0e359e765c9e899bad246268755f5a61de43ed |
| Identifier | iPhone8,4 |
iOS 15.2.1 contains bug fixes for your iPhone including:
Messages may not load photos sent using an iCloud Link
Third-party CarPlay apps may not respond to input
For information on the security content of Apple software updates, please visit this website: