Anybody have old 400 or 4000 firmware (bios) files or the serial installer program? Or any locator repair shops on the west coast. I need to update my pcm units firmware and don't want to really send it across the country. One thing that radiodetection does not really make public is that if you have a 4000 series they have a website that will update your locator online. Doesn't work for my pipeline coating receiver though.