Last update 01/25/2015

DSI Tetra OS Q&A


What is Tetra OS?

The Tetra OS is a firmware that is developed by DSI, and installed on your Tetra. There are two Tetra OS versions available at this moment: 1.5 official and 1.6.19 beta.

How I can check which Tetra OS installed on my Tetra?

The Tetra has two types of processors, Main (AKA "PIC") and Voice, and each has its own operating system. The installed versions are displayed on power up. This is the only accurate method of determining the installed versions.

Where I can download Tetra OS 1.6.19 Beta?

You can download it from dsiforum.com or from here...(No registration required, instructions inside zip) We are not responsible for any problems caused during the installation of Tetra OS, and also problems encountered in the operation. In the event of any problems, please contact DSI customer support.

How I can learn more about Tetra OS 1.6.19 Beta and upgrading process?

You can read thread at dsiforum.com

If after upgrade I want to rollback to my previous Tetra OS, is this possible?

This is possible if you have .sysex dumps of your version Tetra OS. You can also the install latest official Tetra OS 1.5. You can learn more at Official DSI site