Here is a link to the Wisa firmware page with the latest files.
NOTE: You must extract the file from the archive (compressed file). Viewing the file and trying to drag and drop from an archive viewer will not work.
a) Create a folder where you want the firmware update file to reside, or just leave it in your Downloads folder. If you create a new folder, name the folder with the firmware file revision number, such as 1.20, for example
b) If you did create a new folder, move the .zip file containing the firmware update to the new folder, and then open that folder.
c) Double-click the .zip file to extract the firmware update file “SSMCU.bin” to the current folder, along with brief release notes.
c) Right-click on the .zip file and select Extract All to extract the firmware update file “SSMCU.bin” to the current folder, along with brief release notes.
3. Press and hold the button on the top of SoundSend while you plug USB A end of the cable into your laptop/desktop.
5. A Windows/Mac drive/file folder --may-- automatically open on your screen. If it does not, open File Explorer (Windows) or Finder (Mac) and double-click to open the "SoundSend" drive in a new folder.
--Be patient: MCU update can take up to 1 minute to complete, starting from the file drag/drop!--
NOTE: If the LED remains Red after
the update, unplug SoundSend from the laptop/desktop and repeat the update
process. This update failure is not catastrophic, but it does happen on
occasion and usually works with a second try.