Download iOS 9.0.2 (13A452) for iPhone 4[S]

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 iPhone4,1
iOS Version 9.0.2
Release Date 2015-09-30
Update Date 2015-09-27
Sha1sum
79649a7fdf4900883b3986be53e4a2d6b5b555fb
Sha256sum
8e30bde75ab6096237bbf3d6317a47685e3fa37e7c61df99efc885e317e703cf
md5sum
39aea1ee5f69116ac89b5d5375cb1b1b
Size 1.47 GB
FileName
iPhone4,1_9.0.2_13A452_Restore.ipsw
Status

Download IPSW (1.47GB) 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