

Click the Ram chip icon, or go to “Extras” -> “Open Ram” and choose “mototrbocps.exe”…

If you have purchased an XPR at a ham fest for cheap, only to find, it doesn’t work in the ham band, you unfortunately need to hack it.

This guide is useful for those, like me, that want/need to install their specific drivers (such as ones for the monitor).There are certain models within the Motorola XPR line that, by default, will not work in the ham band and typically only cover 450Mhz-512Mhz. How to install unsigned drivers on Windows 10 This will only happen when you connect a radio.Ĭ:\Program Files (x86)\Motorola\MOTOTRBO Drivers\RNDIS When I plug the programming cable into the PC, Windows does not make the "USB Start" sound? This is correct, there is no "intelligence" or level conversion in the programming cable. Windows will give a warning when installing this, you can ignore this warning. The drivers are not signed and you need to install them manually by selecting "Have Disk" and pointing to C:\Program Files\Common Files\Motorola\MOTOTRBO Driver. This should only occur with Windows XP and 2000. When I connect the radio to my PC, Windows asks for a driver? As far as I know, Windows 7 and 8 do not have this problem. The radio communicated fine under Windows 7. I'm using an old CPS (6.5), but that hasn't been a problem before. I have tried installing various drivers, and have reinstalled the CPS, but nothing has worked so far.

The radio seems to be recognized by Windows (Device Manager says the device is working properly). When I attempt to read/write the radio in the CPS, I get error 1687 or error 1689 (unable to detect applicable device). I recently installed Windows 10 (an upgrade from 7), and cannot get my XPR6550 radio recognized by the CPS.
