No brake pressure

[mhanna04]

Ok so little bit of a back story.  My son has a 2012 Fusion SE.  I told him he needed to get the rear brakes done ASAP because pads were almost gone.  He didn't listen and blew out the rear driver side caliper.  During that event he sucked air into the master cylinder and likely ABS module.  We have since done a full rear brake job and replaced the damaged caliper.  We pulled the master cylinder and replaced with a new one after bench bleeding.  Prior to installation of new master cylinder we plugged the outlet ports and confirmed internal seals were good as we had absolutely no movement in the piston with outlet ports plugged.  We have installed the new master cylinder and manually bleed at the caliper at least 4 times time now including running the ABS bleed with Forscan 4 times and bleeding at each caliper.  We have gotten some air of the system but no major pockets of air that I can see.  Even after all these bleeds we still have zero brake pedal and no brakes at all.  Prior to blowing out the caliper the braking system was working perfectly.  Am I missing something, is there still just air trapped in the system somewhere and I need to keep at it with the bleeding?  Any tips/advise would be greatly apricated.