Download iOS 11.4.1 (15G77) 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 11.4.1
Release Date 2018-07-09
Update Date 2018-06-30
Sha1sum
4151a40c76216662222e9855dcd2452292b6eea9
Sha256sum
18f3cac634abd2f0297a1a24067118314eb3e4a2f8c878ce8d157c61259819b1
md5sum
552f1919e66b90c58a0df905afa1e50a
Size 2.54 GB
FileName
iPhone_4.0_64bit_11.4.1_15G77_Restore.ipsw
Status

Download IPSW (2.54GB) Check device info
Release Notes

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

iOS 11.4.1 includes bug fixes and improves the security of your iPhone or iPad. This update:

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

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