TFTP boot process
The TFTP boot process erases all current FortiAuthenticator configuration and replaces it with the factory default settings.
Monitor settings for web-based manager access
Fortinet recommends setting your monitor to a screen resolution of 1600x1200. This allows for all the objects in the web-based manager to be viewed properly without need for scrolling.
Before any upgrade
Save a copy of your FortiAuthenticator unit configuration prior to upgrading. Go to System > Dashboard > Status and select Backup/Restore > Download backup file to backup the configuration.
After any upgrade
If you are using the web-based manager, clear your browser cache prior to login on the FortiAuthenticator to ensure the web-based manager screens are displayed properly.