In some rare instance you might have to upgrade a fortigate from usb. This can be due to numerous reasons
proxy
inside firewall access
a closed system from the internet
etc...
So here's the basic steps
A> read the release notes. This will help you to know what changed , fixes, improvements.
B> study any migration path
C> make a backup configuration
D> clear the debug config error
E> copy the image to a ms-dot formatted usb-stick
F> start the upgrade
G> check status and read any diag debug config errors
And lastly, you have two partitions, you can always revert back to the inactive partition if you want to reboot in previous installed version
NSE ( network security expert) and Route/Switching Engineer
kfelix -----a----t---- socpuppets ---dot---com
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