CHIRP

I had this issue a few times, best thing I can say is the cable driver needs refreshed. try unplugging cable then uninstall / reinstall the driver for the cable.

Also watch your timming while accessing the commands for the radio>computer. You have to hit the V/M after selecting to continue however you have to hit LOW first than to write.

If these two dont work than I would suggest reinstalling Chirp or getting the software from the G4HFQ Site. 73.