I have an xtrons unit, .(TD618AS) Whatever I do I can't get torque to connect to the OBDII reader. The adapter works fine as I can connect my phone to it but not the unit. It says its connected but it never prompted me for a pin unlike when my phone connects, also if I try to disconnect it via the Bluetooth pa el it resolutely stays connected. Anyone else had any experience? Is it possible to update the firmware on the unit maybe? A factory reset failed to fix it