✗ This firmware is not signed. This means you cannot restore to it in iTunes.
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Download (6.77 GB)✗ This firmware is not signed. This means you cannot restore to it in iTunes. The instructions below are included for reference only.
iPhone11,8,iPhone12,1_15.4.1_19E258_Restore.ipsw file that you downloaded.iPhone11,8,iPhone12,1_15.4.1_19E258_Restore.ipsw file that you downloaded.cd ~/Downloadsidevicerestore -e iPhone11,8,iPhone12,1_15.4.1_19E258_Restore.ipsw and press enter.cd DownloadsGet-FileHash iPhone11,8,iPhone12,1_15.4.1_19E258_Restore.ipsw -Algorithm SHA1d9917967e70d1a33fb23aa5e7b27e4ad7f7b059c. If it doesn't, you may need to redownload the file.cd ~/Downloadsopenssl sha1 iPhone11,8,iPhone12,1_15.4.1_19E258_Restore.ipswd9917967e70d1a33fb23aa5e7b27e4ad7f7b059c. If it doesn't, you may need to redownload the file.cd ~/Downloadsopenssl sha1 iPhone11,8,iPhone12,1_15.4.1_19E258_Restore.ipswd9917967e70d1a33fb23aa5e7b27e4ad7f7b059c. If it doesn't, you may need to redownload the file.| SHA256sum | ee464120076009ec01b29f18ff498f43e3b5e512235ff2cd25aede1f56939a4d |
|---|---|
| MD5sum | 9ec6911f3afc2459edc70e0a5c8da183 |
| SHA1sum | d9917967e70d1a33fb23aa5e7b27e4ad7f7b059c |
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:
https://support.apple.com/kb/HT201222