Based on the specific file naming convention you provided, this appears to be a firmware file typically associated with (often "No-Name" or generic brands) that utilize Realtek (RTD) processors .
Practical tips (quick)
If you find a compatible firmware file (often labeled for the RTD298X board), the manual update process typically follows these steps: Nexus 7 2012 /2013 Android 4.4.2 (KOT49H) Update rtd298xtv001eng 442 kot49h update extra quality
This indicates the Android version , which is 4.4.2 (KitKat) . Based on the specific file naming convention you
This guide is for informational purposes only. Modifying your TV's firmware carries a risk of "bricking" the device (rendering it unusable). Proceed at your own risk. rtd298xtv001eng 442 kot49h update extra quality