(Note that while the some VVX desktop phone models do include a standard USB port they do not currently support this USB upgrade method.) While most any USB flash drive should work for this process it is recommended to use a USB 2.0 drive.
And because the firmware is only a few hundred megabytes then pretty much any available USB drive can be used.
The entire process after confirming the administrator password should take less than 10 minutes, so as long as the gear icon is still spinning do not reboot the phone, just wait for the eventual reboot.
On some early models of the Trio the USB process may not work as described above.
Once confirmed the notification icon of a spinning gear should appear in the upper right corner of the display.
In addition if the USB drive contains an activity LED then it should be flashing to indicate that the phone is currently reading the files from the disk.
(unless you are doing exactly the same thing, use different values as /dev/disk0 is usually your boot drive. ) Create a logical volume group: diskutil cs create lvg0 /dev/drive0 /dev/drive1 Copy the resulting UUID - you'll need it in the next step.
Create the logical volume: diskutil cs create Volume de305d54-75b4-431b-adb2-eb6b9e546014 "Case-sensitive Journaled HFS " "Fusion Drive" 100% That's it!
As stated because the Trio uses the same base UCS platform then the Trio will adhere to any existing DHCP, LLDP, or other network configuration parameters specific to the IP phones. The Microsoft native firmware update process that was added to Lync Server 2010 to support Lync Phone Edition devices has been supported by Polycom VVX phones for over two years now, as of the initial 5.0 firmware release.
From a software standpoint the Trio platform is based on the same (UCS) platform that the entire line of modern VVX phones use, thus the majority of upgrade options are the same.