Download iOS 9.0.2 (13A452) 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 9.0.2
Release Date 2015-09-30
Update Date 2015-09-27
Sha1sum
96fe081d91c25a8d090c3d298c1af4cb23c936a4
Sha256sum
d38e475cae41081e5bbbfa58e0dfb265537e70632c30e5b679897f01c18bf243
md5sum
513d0708079ac4b7f2e86ecd5443ae0c
Size 1.99 GB
FileName
iPhone8,1_9.0.2_13A452_Restore.ipsw
Status

Download IPSW (1.99GB) Check device info
Release Notes

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

This update contains bug fixes and improvements including:

For information on the security content of this update, please visit this website:

http://support.apple.com/kb/HT1222