Download iOS 15.5 (19F77) 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 15.5
Release Date 2022-05-16
Update Date 2024-06-03
Sha1sum
6206b9830edeb9ad09053b767b8e15eecb51fde9
Sha256sum
9bfaeccedb3833c7e3bd7eaff65e9236de33ed246c17f2dc2313a43be1da0fb8
md5sum
7dee8aaa2b6eaa7abd948415769be529
Size 4.92 GB
FileName
iPhone_4.7_15.5_19F77_Restore.ipsw
Status

Download IPSW (4.92GB) Check device info
Release Notes

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

iOS 15.5 includes the following improvements and bug fixes:

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