: Unlike mainstream brands that offer over-the-air (OTA) updates, the EW6800 usually requires a manual process using a USB flash drive or microSD card.
: Most updates take 2–10 minutes. Do not disconnect power until the device reboots entirely. WSM - How to update firmware - Sennheiser ew6800 firmware update verified
If you are unable to get the message, troubleshoot in this order: : Unlike mainstream brands that offer over-the-air (OTA)
Firmware Explained: The Key to Device Security & Performance ew6800 firmware update verified