On Tue, Jul 1, 2014 at 5:27 PM, Steve Wall <stevewmn@gmail.com> wrote:

One prolific chip programming cable "gotcha" I haven't heard anyone
mention is using the right USB port. Once you get it working by
manually installing the old version of the prolific driver you have to
plug your programming cable into that exact same USB port on your
computer every time. I ran into this one after trying to reprogram a
radio after a few months of use. After an hour or so of head
scratching I switched ports and boom it worked perfectly again.

I have 2 USB ports on the front of my computer. I just plugged my Prolific based USB programming cable into the left USB port, waited for Win7 to install the latest driver and then downgraded it to the v3.2.0.0 driver. It was assigned COM2. I then removed the programming cable from the left USB port and plugged it into the right USB port. The Win7 driver install/downgrade process was repeated. Lastly I changed the right USB port to also be assigned COM2.

So I can plug my programming cable into either USB port without have to worry about driver issues or having to set CHIRP for a different COM port.

Jim KC9HI