Disclaimer: This article is for educational purposes. Modifying firmware voids your warranty. Ensure you have the correct file for your specific hardware revision.
A: Unlikely. Most CVTE boards have a "boot recovery" mode. Download the original firmware from the manufacturer and repeat the USB method. If that fails, you can buy a replacement main board for the MSD338 on eBay for roughly $25. cvtemsd338512m smart tv update upd better
Navigate to Settings > About TV > System Update . Disclaimer: This article is for educational purposes