What does FBSB RESP: result=255 mean?

Hello, Hopefully this question is appropriate on this list (please let me know otherwise). Running ccch_scan or bcch_scan in the sylvain/burst_ind branch, I keep getting this error: <000c> l1ctl.c:114 FBSB RESP: result=255 I tried checking the code, but I can't quite figure out what's going on. It looks like 255 is an error code, but I don't know where to go from there. This may be related to my SIM card being locked (I think). Running mobile on the sylvain/testing branch, I get: <0005> subscriber.c:625 PIN is required, 3 tries left Will not having the PIN intefere with ccch_scan as well? Thanks, Josh Pereyda