How do you upgrade the software of an existing installation with a Cisco TelePresence MCU
5300?

A.
Download the new software, navigate to Maintenance > Upgrade Software, and upload the
software.

B.
Use FTP to access the MCU, browse to the /etc/software/upgrade directory, put the new load
in, and reboot the MCU.

C.
Navigate to Settings > Upgrade, then follow instructions under Main Software Image.

D.
Use an SFTP client to log in to the MCU, and place the software in the /etc/software/upgrade
directory.