If you are referring to the very homepage of the game's menu, then there isn't any issue at all.
There will always be indicated
Edain Mod 4.3, because that is the main patch to which all the 'secondary' updates relate (and secondary/minor updates are not counted in that indication). That is, you will always find
Edain Mod 4.3, 4.4 or 4.5, and never 4.3.1, 4.3.2, or 4.4.1 appearing on screen. Such updates are not indicated.
Therefore, unless you find something outdated, that belongs to previous versions, you have correctly and successfully downloaded and installed the 4.3.1 update