Trimble R4 II firmware update. Hi, we're trying to do a firmware update of our old trimble r4 II through the serial port. Can anyone recommend a model/brabd of rs232 cable and usb adaptor that will actually work? Prolific...

Trimble R4 II firmware update. #TrimbleR4II #FirmwareUpdate #Geospatial #RS232 #USBAdaptor