It sounds like there is something else going on other than the FireControl software update. Has anything else changed in your system in this time? Are you using any other devices with this computer? We don’t often see so many Bluetooth adapters. The fact that it works with the other computer indicates that its likely not an issue with the electronics.
With the MCB and THC units connected to the computer, you should see this in the Device manager in Ports:
I see neither of these in your screenshot. Do you see USB Serial Device (the MCB) anywhere in the Device Manager? potentially in Universal Serial Bus Controllers?