Hey there, I've recently installed OpenWrt 18.06.4 on the aforementioned device. However, currently I can only use bg on my wireless card. I wanted to know if there's anything to be done to get n working, such as replacing the bcm driver with a different one. I tried installing broadcom-wl but it seemed to make no difference in the way the wireless configuration.
opkg install kmod-brcmsmac might work