I have the same problem with my n810
I cannot use ch 12 or ch 13

If I use the airmon-ng the radio work ok an I can see the ap on ch 12

I check how the wifi module is loaded and after the insmod the init script call a utility named wlan-cal (/mnt/initfs/usr/bin/wlan-cal)

This wlan-cal do the job of reading from some place (private nokia data) and set the wireless parameters
It you rmmod the wifi module cx3110x.ko and the umac.ko and put it back with insmod you can see in wireless manager the ap on ch 12 or 13but you cannot connect on it

You must call the wlan-cal to make the wifi work again but you will lose the 12 and 13 ch

A modified wlan-cal to witch don't use the nokia stored value for the regulatory domain will do the job