Patch 3.1 for version 3.0.

Yes, I registered.
The system displays a message box: "WARNING"
The game Heroes of Might and Magic V: Tribes of the East is not installed. The update cannot be installed.

After this response, it is perfectly clear that the version of the game you have is a pirated one. Unfortunately, it will not be possible to patch it; it is recommended to look for a genuine licensed disc.
I wonder how it was decided that the game was licensed when there are no signs of it? :cool:
The topic will be closed.