motorola atrix 4g bluetooth problems

[sirenko]

I use Motorola Atrix 4g for 5 months without big complaints. It correctly worked with built-in BMW car hands-free. All names from phonebook appeared at car's computer screen in alphabetic order. However 2 weeks ago it spontaneously updated its system to Android 2.3.4. Version 4.5.91.MB860. ATT.en.US and I have got a problem. Now it is impossible to display names from phone book on car computer screen. They appear in numbers and signs (like #, *, @ etc.) without the names despite all my attempts to change settings (view contacts as name or surname) of phonebook in telephone and car's computer. Who knows the solution? Any suggestions? Thanks in forward