The keyword itself can be broken down to reveal the device's specifications: refers to the device's internal model number and English language build. The "442 kot49h" specifically refers to Android 4.4.2 (KitKat) with the specific build number KOT49H used in these devices. This update is often described as "exclusive" because it is not generally available for public download, and owners must often request it directly from their TV's manufacturer.