Although the procedure for changing the MAC address of the AirPort card is present on a large number of sites, it just not work properly on numerous macbook (pro and white) produced in 2010.
I quote here the correct variant which is also working on macbook 2010.
0. Open Terminal
1. Check current MAC address typing the command:
ifconfig en1 | grep ether2. Keeping the Airport cart turned on, but disconnect it from any wifi network wifi (click the icon Airport, select “connect to another Network,” insert a fake random name and click "cancel" while the fake random wifi searching is running).
4. Now type on Terminal :
sudo /System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport -z
5. Again in the terminal, modify the MAC address typing the command:
sudo ifconfig en1 ether 00:00:00:00:00:00
( 00:00:00:00:00:00 must be changed with the new desired MAC address)
6. Verify the new MAC address with the command:
ifconfig en1 | grep etherThe point 4 is the missing one in many guides founded on the web.
Sometimes you need to try several times the command of point 4 and 5.
