Do not download packages that are missing the README or drivers – they are likely incomplete.
Once you have the correct allupgrade_338_4G.bin (or similar) file: Copy the file to the root of an empty USB drive. Plug it into the TV’s USB port while the power is off. Hold the power button on the TV and plug it into the wall. Cv338h-a32 Software Download
Official manufacturers often don't provide these files directly to consumers, so you'll usually need to look toward community-driven repositories: Do not download packages that are missing the
This usually denotes the screen resolution and type. Cv338h-a32 Software Download
Here is a comprehensive guide on how to find, download, and install software for this specific board.