✗ This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore.
| Release Date | March 31, 2022 |
|---|---|
| Upload Date | March 28, 2022 |
| Filename | iPhone_4.0_64bit_15.4.1_19E258_Restore.ipsw |
| Filesize | 4.9 GiB |
| SHA256sum | 73a5eb08698c2ce1eb6499824800c09c855ad1cb53e7f8028c4410ee72599b93 |
| MD5sum | 3368eb0caa4da6ea5c74af99d75504b4 |
| SHA1sum | bcb98612c204172a1b1a7c12577ffcdf38e0ead0 |
| Identifier | iPhone8,4 |
This update includes the following bug fixes for your iPhone:
Battery may drain more quickly than expected after updating to iOS 15.4
Braille devices may become unresponsive while navigating text or displaying an alert
Made for iPhone hearing devices may lose connection within some third-party apps
For information on the security content of Apple software updates, please visit this website: