This is a cosmetic update. The 47MB firmware patch addresses the kernel of the soundbar’s operating system. Here is the verified breakdown:

We downloaded the 48MB binary file and installed it on a dusty SC-UA7 we found on eBay for $40. The process was terrifyingly simple: rename the file to UPDATE.BIN , plug in a USB stick, and hold the “DJ” button while powering on.

On a Windows PC, decompress (unzip) the downloaded file. You should see a file named .

Do not power off the unit during the update. A failed update can brick the mainboard.