Hi Bryan, I tried your tip but this didnt work for me.
At diagnostics test screen, I hit bb button and options and it was blank. I filled in what I thought was my information and it still fails. I notice my EDGE goes to edge when I try to run this test. Might it have to do with the fact that I'm on an unlocked phone on tmo?
I don't know where Bryan went ....but I the EDGE/edge has to do with the sfi (radio) file and how well it handles GSM network. I would stick with the one you have had the most positive experience with.