Does FBX update on its own?
Just wondering if it updates on its own, as I haven't noticed any type of update dowloading happening at launch.
Yes, when there's an update available, FBX will download it in the background and give you the option of installing it when it next starts up.
Your new 2.5 update is live if I am correct, but I don't think FBX updated because it still looks the same and it hasn't asked me if I wanted to update.
When FBX starts, it checks for a new release, and if it finds one, starts to download it.
If you haven't got it already, you should be able to get it by starting FBX, leaving it for 5 mins (its a 50mb download) and restarting it. If this doesn't work - just get the latest release from https://fbx.gg/download/