You can try contacting them via:
If you've ever looked at the back of your Nikai TV, you might have noticed codes printed on the mainboard like TP.SK506S.PB802 or TP.SK713S.PC822 . These are that are crucial for locating the correct software update. Nikai TVs are often built on common, mass-produced hardware platforms like the Amlogic T962D4 chipset, which is also used in many other TV brands. Understanding this is key because matching the exact mainboard version and LCD panel model is often the only way to find working firmware.
Save the .zip file to your desktop. Do not rename the file unless the instructions explicitly say so.
This is the safest and easiest method. It requires a stable internet connection. Turn on your Nikai Android TV. Press the button on your remote control. Navigate to the Settings gear icon in the top right corner.