Cinema 800 - How to Check Firmware Versions
You can check the various, current firmware version numbers on your Cinema 800 by pressing the small surround pairing button under the right end-cap. (shown in image below)
On the front of the bar, the LED display will show the different firmware versions.
Keep pressing this button to scroll through all the firmware currently active on your device. It should display as follows:
MCU 107 > WIFI 220.127.116.11 > DSP 5.0 > SUR T 04 > SUR R 11 > SUB T 03 > SUB R 02 > HDMI 43
If your bar does not match the firmware values shown above, please reach out to Klipsch Product Support to update your system - How To Contact Us for Support