Even if the person had already loaded the latest Underworld fil you will still require a Cas programmer for future underworld updates and new data bin file updates.
At present you can manually add the keys for Digi TV.
Get the latest keys.
Go into the Cam Menu and the Configuration folder and turn N2 AU OFF, if it's already off, ensure Emulators is ON and exit the configuration folder.
Enter the following sections:
Keys
List Keys Edit
Nagravision 2
Digi TV
Key 86 or Key 96, whichever requires updating, (key 86= key 00, key 96 = key 01)
Enter the key and select which method you prefer to use to update the keys.
Hexadecimal or Decimal.
Enter the new keys and exit.
Digi TV should now open.