The basic Windows USB Audio driver offloads processing to your CPU. The proprietary MVSILICON driver enables hardware acceleration.

This is critical: "Software upd" usually means , not firmware. Most B1 chips do not have user-flashable firmware. If you see a file called "Firmware_Upgrade.bin," do not apply it unless you have a backup. Bricking the chip is permanent because there is no recovery mode.

: Look in the "About" or "System Info" section of your device's menu if it has a screen.