If you are currently running FortiOS 7.0.8, upgrading to 7.0.9 is a low-risk, high-reward move. It fixes dozens of crash bugs in VPN and HA domains without introducing radical new feature instabilities.
Navigate to System > Firmware , select Browse available firmware , find version 7.0.9, and click Backup Config and Upgrade . fortigate 7.0.9
, resolving certificate validation issues (SN check) between the firewall and management console. ⚠️ Known Issues & Considerations If you are currently running FortiOS 7
If you are planning to deploy this version, I can help you verify your upgrade strategy. Let me know: Your Your FortiGate hardware model Whether you operate in a High Availability (HA) cluster , resolving certificate validation issues (SN check) between
Run diagnose sys firmware status and verify your downloaded image against the official MD5/SHA256 hashes published in the FortiOS 7.0.9 Release Notes .