# TrueConf MCU Update
The classic TrueConf MCU transcoder server allows you to communicate both with hardware SIP/H.323 terminals and with TrueConf client application users and browsers (via WebRTC). This solution is actively evolving, and we will show you how to properly update it. You can learn about new versions in our blog and news releases.
To update the TrueConf MCU, download the distribution from our website:
# Through the control panel
Updating the TrueConf MCU via the control panel is recommended if only the third digit in the version number changes (for example, from 1.5.0 to 1.5.1). Otherwise, for major versions with changes in the first two digits, for example, from 1.4 to 1.5 or from 1.5 to 2.0, a fresh installation of the new version is required as shown below.
Go to the Administration → About section in the control panel.
Press the Upload file button and select the downloaded package.
When it is added to the list, click the
icon to install the update.Later, you can delete unnecessary files from the list using the
button.
# Clean installation of the update
Major updates to TrueConf MCU, which contain significant innovations, require a clean installation after the previous version has been removed. This usually applies to the release of major versions with changes to the first two digits, for example, from 1.4 to 1.5 or from 1.5 to 2.0.
# Step 1. Saving backup of necessary settings
Save the server configuration as shown here.
When transferring data from version 1.5 to 2.0, you must use the .csv format, in doing so, only the list of contacts and groups will be restored.
# Step 2. Removing the existing version
On the operating system where TrueConf MCU is installed, go to the terminal and execute the command:
Debian
sudo apt purge trueconf-mcu -y
# Step 3. Installing the new version
Install following our instructions.
Open the control panel of TrueConf MCU and activate it with your registration key. You can find this in the email you received when you first downloaded our solution.
When changing the hardware configuration of a virtual or physical machine where TrueConf MCU is installed, you will need to reset the key hardware binding. Please contact us by any convenient means to do this.
# Step 4. Data recovery from backup
Restore the TrueConf MCU configuration from a saved file as shown here.
To restore the configuration with TrueConf MCU 1.5, select a backup in the .csv format.
# TrueConf MCU calibration
After updating, it is mandatory to perform a calibration.
Now you can start working with the new version of TrueConf MCU.