FortiGate
FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.
gmarcuccetti
Staff
Staff
Description

This article describes that it can happen to have the error 'Image upgrade failed' while upgrading the FortiGate from GUI.

 

fortigate-upgrade-03.png

Solution

Try one of the subsequent options:

 

1) Clear the cache of the browser and cookies.

 

2) Use another browser.

 

3 Use incognito mode.

 

If it is failing, try to download the image from support.fortinet.com:

 

Support -> Firmware download -> Download.