I care more about the people my students become than the scores on the tests they take.
Some professional Funai service technicians use a (e.g., FTDI) connected to the TV’s motherboard service header. This requires:
No software is perfect upon release. You might experience random reboots, the TV freezing while browsing apps, or the remote control responding slowly. These are typically software bugs. An update contains "patches" that resolve these glitches, making the TV more stable. funai tv software update