This is the standard method for most Nikai Android and WebOS models. Ensure your TV is connected to a stable Wi-Fi or Ethernet network. Open Settings : Press the button on your remote and navigate to the (gear icon), usually located in the top right corner. Device Preferences : Scroll down and select Device Preferences Check for Updates , then choose System Update Download and Install
If you have tried all the steps and your TV still refuses to update, your hardware may be obsolete. In that case, consider purchasing an external streaming stick (Fire Stick or Chromecast) and plugging it into the HDMI port. This bypasses the Nikai OS entirely, giving you modern software without needing a TV firmware update. Nikai Tv Software Update