Downloading and upgrading the firmware for a FortiGate 80C requires an active FortiCare subscription and access to the official support portal . Because the FortiGate 80C
The FortiGate 80C uses a (baud rate 9600). If you have access, connect via PuTTY to monitor the boot process. This is invaluable for troubleshooting. fortigate 80c latest firmware download
– these were never compiled for the 80C’s architecture (CP6, NP2 lite). Installation will fail or cause a boot loop. Downloading and upgrading the firmware for a FortiGate