Changes made for Pathfinder 5226 controllers.

The new 5226 rev G boards have a different processor chip than previous revs. To differentiate between the G's and the rest it was decided to make the G board software be version 5 and the B's, E's and F's will stay at 4. This will make it easier to find out what type of board it is in the field by looking at the version number in Pathfinder.