Chirp only works with the V71 in live mode. MCP-2A works in the better, non-live way.
PA4J: you said that you found a solution. Is this with a V71E? The service manual is the same for both models. What exactly worked? Both chirp and MCP-2A don’t work for me with V71A. MCP-2A does not need the menu mode on the V71A to read to and write from the radio. Did you configure the Silicon Labs COM port driver, or just use it as installed?