2gig GC3 Firmware Upgrade to 3.2

Can anyone advise about how to update a GC3 control panel’s firmware to version 3.2? 2gig’s website says to get that from your dealer. But, sureitydiy doesn’t seem to offer this service.
Robert

GC3 firmware is updated via a USB flash drive plugged into the USB slot at the top of the panel. The USB drive must be empty aside from the firmware file.

You can find firmware links and descriptions here. Click subscribe in the upper right corner of that thread to be notified when new versions are available.