Some versions improved compatibility with USB drives larger than 2GB.

Do you have a specific you're trying to fix with the update, like a USB error or disc reading problem? BBK DV214SI

Updates often aimed to fix "choppy" playback for specific AVI/MPEG4 codecs. Note that this player cannot be updated to support modern formats like .mkv (Matroska) due to hardware processor limitations.

The is a legacy DVD player, and finding official firmware (прошивка) can be challenging as the original manufacturer support pages are often inactive. Firmware Overview & Features