Found this info on the 4.13 firmware for the 3650...
http://www.mwiacek.com/gsm/firmware/dct4_13.htm#3650
Seems from posts I've found that it's making it's way around parts of
Europe, anyone know when/if this might make it over to the US? The
GPRS over Bluetooth fix looks interesting, though I've never used it
for that length of time before.