Electronic device invalidating commands except for one command and method of processing electronic device

An electronic device comprising:

• a processing unit;
• and
• a plurality of interfaces configured to transmit commands to the processing unit, wherein
• the plurality of interfaces includes a user interface, a wireless communication interface, and a wired communication interface,
• the processing unit invalidates the commands from the interfaces other than the interface from which the command first received by the processing unit after start-up is transmitted, and
• the processing unit is configured to:
• validate only one of the commands, which is received at a first time after the electronic device starts up, from one of the plurality of interfaces;
• and
• invalidates all remaining commands of the commands from the plurality of interfaces except for the one of the commands from the one of the plurality of interfaces.