This can include audible motor noise due to the faders being out of alignment.
If you experience this, you need to downgrade then upgrade which may need to be done a few times.
1 - Uninstall current version of SSL 360°
2 - Install previous version of SSL 360° and click UPDATE FIRMWARE on your UF8(s) in the 360° HOME page.
3 - Update to latest version of SSL 360° and again, click UPDATE FIRMWARE on your UF8(s) in the 360° HOME page.
4 - If issue is not fixed repeat the steps above a couple of times until it works.