Use your remote to navigate to the Settings (gear icon) in the top-right corner.
Select Check for Update . If one is found, click Download . Once it hits 100%, follow the prompts to Restart Now and install. Download ONIDA 55UIB Software part06 rar
Before hunting for external files, always try the built-in system update. This is the safest way to get the latest Android TV OS (like moving from version 10 to 12.1.1). Use your remote to navigate to the Settings