Download iOS 9.3.3 (13G34) 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 9.3.3
Release Date 2016-07-18
Update Date 2016-07-06
Sha1sum
16292beacbd02d647145a202aa3f4022068891ee
Sha256sum
68123367982108cf8941d39ba50278cbebafcf0dc5692efa659500d0dff70aed
md5sum
5e52de24028ef3a4a19bcb4a148ed817
Size 2.27 GB
FileName
iPhone8,2_9.3.3_13G34_Restore.ipsw
Status

Download IPSW (2.27GB) Check device info
Release Notes

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

iOS 9.3.3 includes bug fixes and improves the security of your iPhone or iPad.

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

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