✗ This firmware is not signed. This means you cannot restore to it in iTunes.
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Download (5.23 GB)✗ This firmware is not signed. This means you cannot restore to it in iTunes. The instructions below are included for reference only.
iPhone_4.0_64bit_15.7.1_19H117_Restore.ipsw file that you downloaded.iPhone_4.0_64bit_15.7.1_19H117_Restore.ipsw file that you downloaded.cd ~/Downloadsidevicerestore -e iPhone_4.0_64bit_15.7.1_19H117_Restore.ipsw and press enter.cd DownloadsGet-FileHash iPhone_4.0_64bit_15.7.1_19H117_Restore.ipsw -Algorithm SHA1a3371eefbd19130d151bdbd5fe6ec60a967ee837. If it doesn't, you may need to redownload the file.cd ~/Downloadsopenssl sha1 iPhone_4.0_64bit_15.7.1_19H117_Restore.ipswa3371eefbd19130d151bdbd5fe6ec60a967ee837. If it doesn't, you may need to redownload the file.cd ~/Downloadsopenssl sha1 iPhone_4.0_64bit_15.7.1_19H117_Restore.ipswa3371eefbd19130d151bdbd5fe6ec60a967ee837. If it doesn't, you may need to redownload the file.| SHA256sum | e8271dafb40c86bb0a8031d4f7c78f01aed2a5881c0d49798175cb1e67208c6d |
|---|---|
| MD5sum | f4e6d527978d152b14b7e5b060ec9a13 |
| SHA1sum | a3371eefbd19130d151bdbd5fe6ec60a967ee837 |
This update provides important security updates and is recommended for all users.
For information on the security content of Apple software updates, please visit this website:
https://support.apple.com/kb/HT201222