Download iOS 15.3.1 (19D52) for iPhone SE

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 iPhone8,4
iOS Version 15.3.1
Release Date 2022-02-10
Update Date 2024-06-03
Sha1sum
91ef48064e59178f32478510afdd74edb37bd9b5
Sha256sum
2f83275abe237f6200e3b7b7b57eedcf497cffe205914d0735b60a7324eed04d
md5sum
940852c6df6eeebbc63ec10c2ac806d2
Size 5.04 GB
FileName
iPhone_4.0_64bit_15.3.1_19D52_Restore.ipsw
Status

Download IPSW (5.04GB) 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