For running MiamiDeluxe in registered mode you need three files: Miami.key1, Miami.key2 and MiamiDx.key.
In order to run Miami (not deluxe) in registered mode you need Miami.key1 and Miami.key2.
I doubt that MiamiRegister is of any help because for almost anything it does it needs the registration server at nordicglobal.com which stopped running long ago.
Bye,
Thomas
