Originally Posted by LateBraking
Sorry for the late reply. Could be the cable, we used this method on my friend's 335i with a Radioshack cable and it didn't work. He ordered a cable from V1's website and we tried that, and it worked perfectly. No method changes, just the cable changed. Kind of odd but c'est la vie?
Yep - it was the cable. Bought a different one and it works fine. Thanks!