I found the same issue. I assume this is while your displaying songs\artist via text. I solved it by using the old no-text to nav.mp3 file that I had used to turn text on and off before 2b1 upgrade. When I couldn't get the menu up I tried turning text off manually and it worked. Same procedure. Then make your menu changes and turn text back on from menu. Also, if you're finding that when you do anything button wise on Nav screen and the text stops working (until you reset ignition or ipod) try hitting the R/T button on steering while and bring up at name in your phonebook, then hit R/T again and it will go back to text and text will be back. Hope this helps.

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2005 4.4 X5 Black/Black, the goods