My new SVP B606 smartphone uses Bluetooth 2.1. My 2007 Toyota Prius supports HFP (Hands Free Profile) Ver. 1.0 and OPP (Object Push Profile) Ver. 1.1. When I tried to register the SVP B606 to connect it to the Prius, the phone gave me this error message: "high security enabled--need 16 character key." The Prius only allows me to enter passkeys of 4-8 digits. Can you please help me resolve this issue? Thank you.