Black screen / Update firmware fail trouble shooting
  1. Use the firmware tool to download your device latest firmware to the Micro SD card.
  2. Insert memory card into the unit.
  3. Connect power cord.
  4. Hold power button for 5 seconds, release power button for 5 seconds, then hold power button for 5 seconds again, then release power button.
  5. Wait for 1 minute. After your camera updates the logo on the screen, format the SD card.
  6. Hold Power button to reboot.  Now your unit is ready for use.

Attention: If this troubleshooting does not fix your problem, please contact us about our warranty.