To install, you typically need a clean installation of updated to version 3.1 (Steam version recommended).
Files and patches are often hosted on community sites like EL-MODS or Synthira . Heroes of Might and Magic V - Epic War Age 2.0
If you'd like, I can help you find or a list of the new units added in this version. Heroes of Might and Magic V - Epic War Age - EL-MODS To install, you typically need a clean installation
Rebalances "fort" grade creatures and adds a functional in-game Skill Wheel (v3.03) and blood rage tables. Installation & Source Heroes of Might and Magic V - Epic War Age 2.0