Subscribed on this thread.
I searched all over for solution for this "No heat problem"
Many people start the thread and doesn't update the final fix.
I have the same symptoms as you. I bought the car with the heat not working and I thought its just the thermostat (No overheat, No coolant leak, ET has no crack, fan blows good)
I replaced the thermostat and flushed everything with oem blue coolant but I'm still getting no heat.
I just bought new heater valve to see if that will work (which i doubt). I'll updated after I install them tomorrow
Btw, Dmax where in jersey are you located? I think I bleed the system correctly but it doesn't hurt to get local advise to do so (This is my first Bimmer, I've been on Subaru and honda game all my life)