"Intel Centrino Advanced-N + WiMAX 6250" doesn't work

Hi,

I have a lenovo X201s with a "Intel Centrino Advanced-N + WiMAX 6250" bundled.
The device seems recognized as iwn0 correctly but it just doesn't work.
The command "ifconfig wlan0 up scan" return immediately and nothing showed.

Is the device not supported, or do I miss something?
Any suggestion is welcome, thanks.

Here is some information:

$ uname -a
FreeBSD bud 9.0-BETA2 FreeBSD 9.0-BETA2 #2: Tue Sep  6 16:50:09 CST
2011     root_at_bud:/usr/obj/usr/src/sys/BUD  amd64

dmesg -a:
http://www.csie.ntu.edu.tw/~b90093/tmp/dmesg.txt

rc.conf:
http://www.csie.ntu.edu.tw/~b90093/tmp/rc.conf

kldstat -v
http://www.csie.ntu.edu.tw/~b90093/tmp/kldstat.txt


Tz-Huan