ABS on 2004 Grand Cherokee Laredo

I replaced calipers and all brake lines but can't get air out of system as the brake pedal is very soft. Does anyone know how to bleed the brakes with ABS? I think the air must be in the ABS unit, ie.

 

To bleed brakes I was always told to start from the furthest bleeder port from brake fluid reservoir which usually is passenger rear

 

You were told right, I do prefer the bleeder hose into the coke bottle method for bleeding. Although after doing a little research, the method has changed for ABS:https://www.tomorrowstechnician.com/brake-service-bleeding-and-flushing-abs-systems/. Isn't technology great?