I've installed the latest version of FW available from Holux (1.04) to my M-1000C and tried to change the Bluetooth address, but I didn't succeed. Currently it is 000000000000 and it always returns to this value after pressing the button. I'm not sure if it was different from the factory. I couldn't find any support on their website and their Support team replied something like "Does it work OK? If not, return it to the vendor" (that's what I call a professional reply to a question about changing BT Address :-/).
Why I want to change it? Because I have problems with SE phones and I suspect the address of zeros can be a problem (please correct me if I'm wrong)
Thanks for any help, J. (WinXP 32bit, latest BT747 (Java Web Start))