Forti OS 7.4.X

Hi

Basically the latest patch version is the most stable. The patch version is the last number of the version, i.e.: it is the Z in X.Y.Z.

So 7.4.3 is the most stable among the three versions you mentioned.

However 7.2.7 should be more stable than 7.4.3, and 7.0.14 may be more stable than 7.2.7.

Kindly see the below link for detailed reference:

https://community.fortinet.com/t5/FortiGate/Technical-Tip-How-to-determine-Firmware-build-number-when-System/ta-p/197053

We're on 7.2.7.  Holding off the 7.4 chain until 7.4.4 at the earliest.  

Hello @IT_ZD, 

Fortinet TAC always suggests to stay on the latest version of the branch you are in. 
For example, if you to stay on 7.2.X branch , it is recommended you stay in the latest release, i.e 7.2.7. 
For the 7.4.X branch, the latest version is 7.4.3 so it is recommended you stay on that version. 
Depending on features you would like to use or are currently using you should refer to the release notes of the specific version and see if there are any known issues.