/System/Library/Carrier Bundles
Were you find all the carriers' directories. For instance inside the TIM_Italy.boundle there's interesting stuff like, for example:
Default_CARRIER_TIM.png FSO_CARRIER_TIM.png, Info.plist, ResourceRules.plist, carrier.plist version.plist .
So, the first thing that I've done was to rewrite the carrier.plist replacing the string apnXusernameXpassword with something fake. Nothing really happened . So, I tried by editing the personal configurations preferences present inside:
/var/preferences/SystemConfiguration/preferences.plist
typing vi /var/preferences/SystemConfiguration/preferences.plist . Now, searching the string apn (/apn) I've found two different places where it's possible edit it !
The first one :
The second one:
I changed the default value af APN string from "1" to "0", blocking the Edge access by default. So far I'm not sure which is the default "apn-key" and which is the user "apn-key", so I've just replaced both . It's working well !!
Enjoy the tip.