If your TV is connected to the internet, you can check for updates directly through the system settings: Navigate to Settings : Use your remote to select the (cog icon) at the top of the home screen. Access System Information Device Preferences ) and select Check for Update System Update
Q: Can I update my Coocaa 32S3U's firmware using a mobile device? A: No, you cannot update your Coocaa 32S3U's firmware using a mobile device. You need to use the TV's built-in update feature or a USB drive. Coocaa 32s3u Update Firmware
Insert the prepared USB drive into the on the side or back of the TV. If your TV is connected to the internet,
Verify that the file downloaded correctly and that the USB drive is formatted to FAT32. You need to use the TV's built-in update
Reduced "Logo Hang" or "Standby Mode" bugs that previously required a hard reset.
While holding the power button, plug the power cord back into the wall outlet.