GC3 firmware update how to?

I have a GC3 with FW 3.0.0 and need to update for my new 4g wireless sled.

Is there a step by step on how to do this? Can I go from 3.0.0 to 3.2.5?

GC3 firmware and instructions can be found below:

3.1.3 is the lowest version supporting the 4G LTE module. You can update to 3.1.3 or any subsequent version. Use a flash drive with no other files and just plug it into the USB port on top. The panel will prompt you to update.