Download iOS 15.4.1 (19E258) for iPhone 12 Pro

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 iPhone13,3
iOS Version 15.4.1
Release Date 2022-03-31
Update Date 2022-03-28
Sha1sum
039a69b4a7cf2408053f65206985c00d5c3ac2fc
Sha256sum
4464f0ac3bead5d72618e224fbf56ce32ebab31a0ae93217f01a3bb5a245598c
md5sum
dcd374ed1d736b0da1be51af91adde56
Size 6.21 GB
FileName
iPhone13,2,iPhone13,3_15.4.1_19E258_Restore.ipsw
Status

Download IPSW (6.21GB) Check device info
Release Notes

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

This update includes the following bug fixes for your iPhone:

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

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