Download iOS 15.4.1 (19E258) for iPhone 6s+

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 iPhone8,2
iOS Version 15.4.1
Release Date 2022-03-31
Update Date 2022-03-28
Sha1sum
9601c92da32e68e80f71d19fe0847ca0329c390b
Sha256sum
bc420f63e0e84b5f801b82198840168a1634859041bbb78bca3c6eeda9beacd1
md5sum
1c8c81dd52c0862f3b4d13d31888c6fc
Size 5.04 GB
FileName
iPhone_5.5_15.4.1_19E258_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

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