Are you trying to fix a like sound issues or a black screen? Do you have a PC or Mac available to format the USB drive?
Adds support for newer video codecs and MKV files.
If you purchased your unit from a major online retailer, contact their customer service. They often have access to a direct download link for the "UC40_V1.0" or "UC40_V1.1" firmware versions. Step-by-Step Installation Guide
Before you begin the download, ensure you have the following items ready to avoid "bricking" (permanently disabling) your device. A 2.0 or 3.0 drive formatted to FAT32 .