This is the easiest method if your TV is connected to a network. Sony Bravia KD-43X8309C HDTV Firmware 3.885

Apps missing or misbehaving:

The most recent major firmware versions (such as and v5.381 ) brought several transformative changes to this model:

Since over-the-air (OTA) updates may no longer be pushed, you must update manually via USB: How to perform a software update on your TV | Sony USA