With the firmware version set, the phones will download and apply the update when they next reboot. You can manually reboot a phone from its web page or by restarting it from the CUCM console. Once the phone reboots and re-registers, log in to its web interface (by entering its IP address in a browser) to verify the new firmware version under the Information tab.
: Updates often close vulnerabilities that could be exploited by malicious actors. Hardware Compatibility cm69updatebin new
Alternatively, some units will auto-detect the file upon reboot if the USB is inserted. With the firmware version set, the phones will