Download iOS 15.4 (19E241) 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 iPhone8,1
iOS Version 15.4
Release Date 2022-03-14
Update Date 2024-06-03
Sha1sum
dda7fe4bdec5d4e3e87aebff898460c8be2ab358
Sha256sum
a0af2f5d2a54be2d1828d298c8daf58c6c3654d9dc71f2e14d237e1251a210b2
md5sum
135b18ff1b0d32de069d2a69fd10400c
Size 4.90 GB
FileName
iPhone_4.7_15.4_19E241_Restore.ipsw
Status

Download IPSW (4.90GB) Check device info
Release Notes

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

Face ID

Emoji

FaceTime

Siri

Vaccine cards

This release also includes the following enhancements for your iPhone:

This release also includes bug fixes for your iPhone:

Some features may not be available for all regions or on all Apple devices. For information on the security content of Apple software updates, please visit this website: https://support.apple.com/kb/HT201222