My NXT seems to be stuck in slave mode. I can connect to it with my phone or my computer on channel 0, channel 1,2 and 3 just give me the "line is busy" error. I've tried deleting all pairings on all devices and then repairing with no success. It still only connects to channel 0. Channel 0 won't work for what I want to do. I'm trying to write an android program to send numerical values to the NXT's mailboxes. Any ideas?