I have searched a lot and couldn't find any official document that states whether the APNs in Nokia Lumia can be configured by OTA (over-the-air). I know that other Windows 7.5 phones like HTC can be configured by OTA. Do you if there is a specific XML that can be used to configure Lumia by OTA. I tried to send this xml but the device failed to receive it.
<parm name="NAPID" value="GPRS1" />
<parm name="BEARER" value="GSM-GPRS" />
<parm name="NAME" value="name" />
<parm name="NAP-ADDRESS" value="name"/>
<parm name="NAP-ADDRTYPE" value="APN" />
<parm name="INTERNET" />