Download iOS 15.3.1 (19D52) for iPhone 7 Plus (Global)

You will have to note that you can only restore signed IPSW firmware files using iTunes or 3utools.

❌ This IPSW firmware is not being Signed by Apple

Firmware Identifier iPhone9,2
iOS Version 15.3.1
Release Date 2022-02-10
Update Date 2022-02-07
Sha1sum
3e91ea504f28ddaefcc0482267a6dcbd5ce51ffd
Sha256sum
1cb297d3a370754a00c7fd9c45f798bb5247ce54e2fdef64e86e73b1fdd5a8f7
md5sum
0e18f8bf20a051120b35d0357e9f748f
Size 5.56 GB
FileName
iPhone_5.5_P3_15.3.1_19D52_Restore.ipsw
Status

Download IPSW (5.56GB) Check device info
Release Notes

It should be noted that these are the official release notes for the from Apple

iOS 15.3.1 provides important security updates for your iPhone and fixes an issue that may cause Braille displays to stop responding.

For information on the security content of Apple software updates, please visit this website:

https://support.apple.com/kb/HT201222