The driver which I modified was the bcmwl6.inf which supports switching between:
United States: CHANNELS 1-11
Japan: CHANNELS 1-14
Germany: CHANNELS 1-13
If you have bought one of these "Broadcom BCM43222 4322 mini-PCI a/b/g/n A241-431801R-02 Dual Band wifi Card 300M" cards, then you have already seen that finding a driver which will work on it is difficult.
This driver will install but I recommend manual installation because in modifying source code, the "bmwl6.inf" lost its' digital signature. This is a feature in Windows 7 that requires a short explanation. There is a digital weight which goes down to the kb. This is multiplied by a secret algorith
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