Troubleshoot > Advanced options > Startup Settings > Restart Once the menu appears, press to "Disable driver signature enforcement". Manual Driver Update Connect your Nokia RM-1187 (turned off) to the PC. Device Manager by right-clicking the Start button.
: Choose "Install the hardware that I manually select from a list (Advanced)" and click Next . Select Port : Choose Ports (COM & LPT) from the list. nokia rm 1187 usb driver mtk