I have the ft2dr and want to use it for wires x, pdn. I can not find what the latest firmware version is. Unable to get anywhere on the Yaesu website. When I click on the "file('s), I get a message saying invalid file. I know what the version is on my radio. I also have the SCU-57 cable kit. Just want to make sure Im up to date. This was a used radio purchased from my club.