Note: It is rare that one needs to update the firmware on any product and I would only do it if directed to do so by tech support.

The Spectrum Pro has 2 distinct "firmwares" that may need to be updated. The main control or "application firmware" is known as the "K21 Firmware" or "Application firmware". The security features are based in the "MaxQ firmware". Each firmware can be updated individually. Note: when updating the K21 firmware the Spectrum Pro will need to reboot. The MaxQ firmware can be updated without rebooting.  For this reason you may want to update the MaxQ firmware first when updating both. The screenshot below shows how to update the firmware on a Spectrum Pro. The process is the same for both K21 and MaxQ firmwares. Only the file changes. 

In uDemo, with Spectrum Pro connected, execute the Update Firmware command

Navigate to the firmware file(S), click Open. (you can download the firmware files from the Spectrum Pro - Downloads page)

Spectrum Pro (SPTP-XXX-XX-aaXa-YY(Y)- ZZ) - Home