T20 Sound Updating Software Guide

Here are T20 Sound Software updating Guide.

Please download the software by this link:


1, Prepare a micro SD card (8GB-64GB) and format the SD card to FAT32 on the Windows system.


  1. Unzip the “T20Sound Update Software” file  to “T21 Sound update software folder.






  1. Please copy the file(mark red) into your microSD card.


  1. Insert the microSD card into the camera and turn on the camera, the camera will update sound automatically.
  1. The blue light flashes when sound updating. The blue light goes off when you finish the updating successfully.
  1. After you update the sound successfully, wait for 7-10 seconds, the camera will restart automatically.