All 109F models could carry either the 4 50kilo or 1 250 kilo bomb with associated rack. The difference between the F-2 and F-4 lay in a slightly more powerful engine, larger oil cooler, larger engine intake, and a redesign in the way the tail mated to the fuselage to strengthen the joint. The upgrade to the Mg 151/20mm while "standard" in the F-4, was already underway in the field on F-2's.
The AH 109F should have the ability to Jabo. Furthermore, the graphic texture for the 250 kilo rack in already included on the 109F bitmap. This means all that is needed is a change in the coding and the 109F could carry a bomb.