How could I turn HEADING on? I did.... 1. Factory restored. 2. KS Option, O-C-B and paired. 3. GPS Option o-g-b enter. 4. Everything works fine. 5. Press "h" for heading but it is not known. 6. I walked much but not work. 7. I pressed "v" and it switched to Virtual Mode. 8. I press "v" again and it turned to GPS Mode. 9. But Heading is unknown. How could I wake GPS from sleeping (none). I noted the display said that GPs sets the reciever to none. Help me. Leslie--