Download iOS 9.3.4 (13G35) for iPhone 5s (GSM)

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 iPhone6,1
iOS Version 9.3.4
Release Date 2016-08-04
Update Date 2016-08-01
Sha1sum
e4c9b5d8c9694dad50329cb95a69d27c3b33ac36
Sha256sum
d4e4dbed1ccb29d5c1d67746a9abf1632aab75da7ce1007477b1fc4b6474dfbe
md5sum
3a37a98e0d0eb52ef8540207beec5cf2
Size 1.85 GB
FileName
iPhone6,1_9.3.4_13G35_Restore.ipsw
Status

Download IPSW (1.85GB) Check device info
Release Notes

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

iOS 9.3.4 provides an important security update for your iPhone or iPad and is recommended for all users.

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

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