1999 Ford Explorer brake bleeding

I just installed new calipers rotors and pads on the front of my explorer I tried to bleed the brakes and I have a spongy pedal.so I bled all four wheels and I still have a spongy pedal.I read in my Haynes manual that 96 and earlier 4 wheel ABS has to be bled by a dealership.it also says that newer models are to be bled just like a vehicle without ABS.I purchased a master cylinder but haven't installed it yet.I'm worried about the bleeding procedure. I've installed master cylinders and brakes before on other vehicles with ABS but I've never had this type of problem.