ClearOne Beamforming Microphone Array Quick Star - Manual (Page 7)

QUICK-START GUIDE
5
4. The units will default and reboot after the download of 4.X firmware.
The 2.X to 4.X upgrade requires the firmware to be loaded twice to
complete the version upgrade.
5. Units are fully upgraded.
6. Verify units have been upgraded by checking the firmware version
on the front panel.
Reconnect all E-bus cables, if needed, to complete the stack of units.