可以支援FortiOS 6.4.4 build 1803韌體的FortiGate硬體清單：
FG-40F, FG-40F-3G4G, FG-60E, FG-60E-DSL, FG-60E-DSLJ, FG-60E-POE, FG-60F, FG-61E, FG-61F, FG-80E, FG-80E-POE, FG-81E, FG-81E-POE, FG-90E, FG-91E, FG-100E, FG-100EF, FG-101E, FG-140E, FG-140E-POE, FG-200E, FG-201E, FG‑300D, FG-300E, FG-301E, FG‑400D, FG‑400E, FG‑401E, FG‑500D, FG‑500E, FG-501E, FG-600D, FG-600E, FG-601E, FG-800D, FG‑900D, FG-1000D, FG-1100E, FG-1101E, FG‑1200D, FG-1500D, FG-1500DT, FG-2000E, FG-2200E, FG-2201E, FG-2500E, FG-3000D, FG-3100D, FG‑3200D, FG-3300E, FG-3301E, FG-3400E, FG-3401E, FG-3600E, FG-3601E, FG-3700D, FG-3800D, FG‑3810D, FG-3815D, FG-5001D, FG-3960E, FG‑3980E, FG-5001E, FG‑5001E1

原廠修正錯誤說明：
https://docs.fortinet.com/document/fortigate/6.4.4/fortios-release-notes/289806/resolved-issues

更新了該版本的韌體後，TLS的版本會預設為1.2版。