I was having trouble using the Radio Configuration Utility. I could configure an, OM5P-AC, but could not flash the firmware. I looked at some other posts here on CD and got some clues from them.
It has to do with the ethernet utility that the configuration program uses, WinPcap. WinPcap has been discontinued, but you can find the last version here: WinPcap · Download The reason WinPcap was discontinued is that it didn’t work well with the latest versions of Windows.
The replacement for WinPcap is called Npcap. You can find out more information here: Npcap: a WinPcap replacement for Windows 10 and 11 There is an installer for Npcap here: Npcap: Windows Packet Capture Library & Driver
Npcap is required for things like WireShark, an ethernet traffic capture tool.
I currently have both WinPcap and Npcap installed on my Windows 10 machine and the FRC Radio Configuration Utility works both for configuration and loading the firmware.
There is actually a separate program (ap51-flash.exe, called by the utility) that flashes the firmware. This seems to be the program that requires WinPcap. and will likely need to be re-written to use Npcap as more teams begin using newer versions of Windows.
Hope this helps someone else.