What is the IR code of the remote control?
(InfraRed codes) A complete set of infrared signals assigned to a particular model of a set-top box, TV, or other A/V equipment.
In the end user’s eye, the remote control is like this
In the software engineer’s eye, as the designer of the tv and remote control. The remote control is a code, when the users press the button on the remote control, it needs to send a unique code to the TV. When the tv get the code, then make a relative action, like Volume+, Volume-, Channel+, Channel-.
In order to use the remote control to operate the tv, so the remote control and tv should have the same IR code. If you don’t know and confirm the IR code, just download the firmware from the internet without confirmation and upgrade the tv software, then the communication between the remote control and tv will discontinue, the tv with new firmware will don’t understand the action of the remote control. Your tv will be disfunction.