Download iOS 15.3.1 (19D52) for iPhone SE (2020)

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 iPhone12,8
iOS Version 15.3.1
Release Date 2022-02-10
Update Date 2022-02-07
Sha1sum
8c939ddbfaf7ee3bbeefc96cd45994d5d487d05d
Sha256sum
2a84289020e2b72044c33f503aee7b5fe77da20aa8c6613d988b50848388eb39
md5sum
d08dc160ddbe2eec6bd87fc2d72cbfc4
Size 5.77 GB
FileName
iPhone12,8_15.3.1_19D52_Restore.ipsw
Status

Download IPSW (5.77GB) 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