The Fw-190F-9 was build side by side with the Fw-190A-9 and shared in all of its improvements. Basically that consisted of a BMW 801 TS radial engine with a larger VDM wooden propeller blade. The engine cooling fan was also changed out with a 14 blade fan replacing the 12 bladed version of the F-8. Those aircraft coming off production lines in January 1945 were also fitted with the larger 'blown' canopy. At this time a modified bomb rack was installed that allowed heavier bombs to be carried.
During the latter part of 1944, air to ground rockets called 'Panzerblitz 1' were developed. The mounting of these were finalized at 8 per wing and replaced the outer bomb racks. The Panzerblitz 1 was in fact the mating of an R4M rocket with the 80mm mortar grenade. Though devastating against soft targets, they were only able to penetrate about 3 1/2 inches of armor. Some of this problem was overcome by firing the missiles off in pairs, but a larger weapon was needed and later developed. Those Fw-190F-9s carrying the Panzerblitz rocket were designated Fw-190F-9/Pb1 and served on all of the shrinking fronts until the end of the war.