✗ This firmware is not signed. This means you cannot restore to it in iTunes.
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Download (3.41 GB)✗ This firmware is not signed. This means you cannot restore to it in iTunes. The instructions below are included for reference only.
iPhone_4.7_P3_12.3.1_16F203_Restore.ipsw file that you downloaded.iPhone_4.7_P3_12.3.1_16F203_Restore.ipsw file that you downloaded.cd ~/Downloadsidevicerestore -e iPhone_4.7_P3_12.3.1_16F203_Restore.ipsw and press enter.cd DownloadsGet-FileHash iPhone_4.7_P3_12.3.1_16F203_Restore.ipsw -Algorithm SHA1ff876bff2a63d71ce7f926e14ba925556713fec9. If it doesn't, you may need to redownload the file.cd ~/Downloadsopenssl sha1 iPhone_4.7_P3_12.3.1_16F203_Restore.ipswff876bff2a63d71ce7f926e14ba925556713fec9. If it doesn't, you may need to redownload the file.cd ~/Downloadsopenssl sha1 iPhone_4.7_P3_12.3.1_16F203_Restore.ipswff876bff2a63d71ce7f926e14ba925556713fec9. If it doesn't, you may need to redownload the file.| SHA256sum | f84eeebedabbd604fff77f0782e0c19a35a3ab9c20cc33f9606daed55e9d89c7 |
|---|---|
| MD5sum | 01c14063eb73dc38d8d0d1ac63cbf288 |
| SHA1sum | ff876bff2a63d71ce7f926e14ba925556713fec9 |
iOS 12.3.1 includes bug fixes for your iPhone and iPad. This update:
Fixes an issue that could prevent making or receiving VoLTE calls
Fixes issues in Messages that could cause messages from unknown senders to appear in your conversation list even though Filter Unknown Senders is enabled
Fixes an issue that could prevent the Report Junk link from appearing in Messages threads from unknown senders
For information on the security content of this update, please visit this website: https://support.apple.com/kb/HT201222