Bluetooth problems with nuvi 660

 

After my nuvi 660 updated to bluetooth ver. 3.40 the unit screen locks totally.I have to turn off the gps and then start the unit and then enable bluetooth again but it wont connect to the phone again after that update.
I have a Sonyericsson C905 and it workd fine before the uppdate.I allso tryed with Sonyericsson K750 and K800.
Plz i need some help.

Sorry for the spelling, I´m from Sweden.

// Andreas