Download iOS 15.3.1 (19D52) for iPhone 8 (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 iPhone10,1
iOS Version 15.3.1
Release Date 2022-02-10
Update Date 2022-02-07
Sha1sum
31c8da384b3e5bc07546c512d670c0452d36c8f1
Sha256sum
e61fbceef506092cdcea2d1937b4c5842b636bf98426ca46a9127bbf9dbabe88
md5sum
cfa34e4b9a5b19333bf82603af629d80
Size 5.38 GB
FileName
iPhone_4.7_P3_15.3.1_19D52_Restore.ipsw
Status

Download IPSW (5.38GB) 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