Use the Fortinet Upgrade Path Tool . Moving from 6.4.x or 7.0.5 directly to 7.0.9 without following the recommended intermediate steps can corrupt your configuration file.
The 7.0.9 patch was significant for resolving several "quality of life" issues that plagued earlier 7.0 releases. Key areas of improvement include: fortigate 7.0.9
The release of marked a critical maintenance milestone for Fortinet’s security fabric. While newer versions like 7.2 and 7.4 are available, the 7.0.x branch remains a "mature" release, favored by enterprises that prioritize stability over cutting-edge features. Use the Fortinet Upgrade Path Tool
Optimization of the web-based management interface, particularly when viewing large firewall policy sets or logs. 3. Critical Security Considerations fortigate 7.0.9