I'm currently on DC 3.2.2 with the latest Radio (2.05.00.06.10) and the oldest WiMax (24722).
My MAC address currently matches the one on my rear label.
I'm not 100% sure on what my next step should be. I'm not sure how one updates the PRL/Profile, but I've seen it mentioned a lot. Should I just grab the latest WiMax from here and flash it? I unfortunately have no 4G near me to test my phone to make sure it's even working right now, but I will be in Baltimore a lot this summer and wish to use it there.