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Upgrade Magewell USB Capture HDMI Firmware Follow


The Magewell USB Capture HDMI device allows wired HDMI screen sharing from a laptop or mobile device. The default image capture is 16:10 (with 2 black bars). You can upgrade the firmware to switch to 16:9 (no black bars) if the laptop device outputs 16:9.  (Note: Macbook pro only outputs 16:10) 



  • Download the upgrade tool zip file on to your PC 
  • Connect the USB Capture HDMI device to your PC's USB 2.0 port
  • Extract zip file and run the Donglehelper.exe file
  • Open the Donglehelper QSM pdf file
  • Follow the instructions to upgrade
  • For Windows PC, use Bulk mode firmware; for MacOS, use iOS mode firmware