My MacBook country code is set by Japan.
In this case, I can use only 5.15~5.25 channels from ch#36 to ch48 at 5GHz Band.
I'd like use the other channels..by other country code.
How can I change the Wireless card country code?
The country code is automatically detected and set by your router. Wireless routers use the frequencies specified by the regulatory agencies in the countries in which they are sold.
There is nothing to change in your MacBook.
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