Upgrade from Solar Pathfinder Assistant V.3 to V.4
Enter your V.3 serial number to obtain a new V.4 serial number.
Locate your software serial number
The Solar Pathfinder is a must have piece of gear for every installer's tool kit! —Joe Schwartz CEO & Tech Editor of HomePower Magazine
Enter your V.3 serial number to obtain a new V.4 serial number.