Check this forum as there have been several instances of this happening. Some required radio replacements via FORD while others, if I recall correctly, had a module replaced. Anyway it can be frustrating. Good luck. My radio had to be replaced and all has worked fine since then.
2011 F-350 Lariat FX4 Crewcab, SRW, LB Two-Tone Golden Bronze Metallic/Pale Adobe Metallic, Adobe Leather Interior, 6.7L, 3.55 elocker, 20" Michelin LT275/65R20E Tires, 11500# GVWR, Lariat Ultimate Package, 5th Wheel Prep Pkg, Engine Block Heater, ARE Tonneau Cover, Tailgate Step, Universal Garage Door Opener, Upfitter switches, Navigation Radio, Ranchhand Bumpers front and rear, Ford Vent Visors