MarkyD

You may have already found the solution, but it wasn't posted here. I was having the exact same problem, trying all the same methods with no joy. Searched on the Klipsch site and found this nugget site: https://www.klipsch.com/firmware?product=110026&serial= Seems the RSB-11 firmware updates are very serial number specific, otherwise it will stop at step 6! Identify your soundbar S/N, download the proper firmware, load onto a blank thumb drive, and follow the procedures. Worked well for me.

I was having this exact problem, dug in deeper and the firmware is very S/N specific. You will need to go to this site to download the serial number appropriate for your RSB-11 https://www.klipsch.com/firmware?product=110026&serial=