So they changed the language, and the new language is<p>&gt; Describe, if the device permits third-party software or firmware installation, what mechanisms are provided by the manufacturer to permit integration of such functions while ensuring that the RF parameters of the device cannot be operated outside its authorization for operation in the US. In the description include what controls and&#x2F;or agreements are in place with providers of third-party functionality to ensure the devices’ underlying RF parameters are unchanged and how the manufacturer verifies the functionality.<p>Hardware locking to correct frequencies would satisfy this requirement. But it also sounds like getting in touch with the authors of common third-party firmwares, and getting them to agree to stay within FCC might suffice? That isn&#x27;t totally clear, but it seems like that would be the ideal: hardware manufacturers some risk of power users reprogramming their radios incorrectly, but keep an eye on things so no one publishes software that leads people into doing it by accident or makes it too easy.