--- title: "Installing Feature / License Keys in the LA-5300" slug: "installing-feature-license-keys-in-the-la-5300" tags: ["LA-5300", "Linear Acoustic LA-5300", "Dolby Digital Plus License", "ATSC 1 License", "Feature Key", "Dolby AC-4 License", "Nielsen License", "Verance License"] updated: 2025-06-12T23:13:29Z published: 2025-06-12T23:13:29Z canonical: "docs.telosalliance.com/installing-feature-license-keys-in-the-la-5300" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.telosalliance.com/llms.txt > Use this file to discover all available pages before exploring further. # Installing Feature / License Keys in the LA-5300 > [!WARNING] > **Warning!** > > Updating the feature licenses in your unit **WILL** interrupt audio and all processing. Ensure the unit is not in the critical air chain when you perform this. ## Scope This document guides the user through the installation of a software license key onto the Linear Acoustic LA-5300. ## Description Certain software features of the LA-5300, such as Dolby® encoding, Nielsen watermark encoding, and Verance® Aspect® watermark encoding are enabled by license keys. These license keys are able to be installed in the field. ## About the License Key Installation **The following items are required to install the license:** - License file to be installed - Unit to install the license file onto - Computer with access to the internet, which is used to control the unit via a web browser (Chrome or Safari are recommended) - Physical access to the unit, in case a power cycle is required **Time Required:** Installation of the license key should typically take under 10 minutes, unless a software update is required at the same time **Software Update:** If a software update is going to be performed in addition to installing a license key, follow the instructions provided here: [Installation of a software update](https://docs.telosalliance.com/docs/support-help-doc-template-2) ## Procedure 1) Back up your unit and all presets, ensure you have physical access to the unit in case a power cycle is required > If a software update is to be installed at the same time, follow the instructions provided [here](https://docs.telosalliance.com/docs/support-help-doc-template-2) to perform the software update before installing the license key 2) Connect to the unit and navigate to the **System** menu page ![LA-5300 device settings showing system menu and power supply status information.](https://cdn.document360.io/57e3cd80-d493-453c-9672-ad1b043dadc3/Images/Documentation/NGA UI SW Updates - 07a(1).png?sv=2026-02-06&spr=https&st=2026-11-12T11%3A02%3A54Z&se=2026-11-12T12%3A02%3A54Z&sr=c&sp=r&sig=Q0TsG2h02bbYVbia6TTNG%2BtUi%2BIEU1lg7lp5Ej%2BByBA%3D) 3) In the **Feature Keys** section, press on the “ **+ Install Key…** “ button. ![Feature keys interface showing request and activation code fields with installation options.](https://cdn.document360.io/57e3cd80-d493-453c-9672-ad1b043dadc3/Images/Documentation/NGA UI SW Updates - 00.png?sv=2026-02-06&spr=https&st=2026-11-12T11%3A02%3A54Z&se=2026-11-12T12%3A02%3A54Z&sr=c&sp=r&sig=Q0TsG2h02bbYVbia6TTNG%2BtUi%2BIEU1lg7lp5Ej%2BByBA%3D) 4) Enter the license key number, then press “**Install Key…**” ![Feature keys interface showing activation and request code fields for software installation.](https://cdn.document360.io/57e3cd80-d493-453c-9672-ad1b043dadc3/Images/Documentation/NGA UI SW Updates - 16.png?sv=2026-02-06&spr=https&st=2026-11-12T11%3A02%3A54Z&se=2026-11-12T12%3A02%3A54Z&sr=c&sp=r&sig=Q0TsG2h02bbYVbia6TTNG%2BtUi%2BIEU1lg7lp5Ej%2BByBA%3D) 5) Copy the Request Code provided, and navigate to [https://secure.telos-systems.com](https://secure.telos-systems.com) This can be done by clicking on the link provided directly below the “**Request Code**” field ![Feature keys interface displaying request and activation codes for software activation.](https://cdn.document360.io/57e3cd80-d493-453c-9672-ad1b043dadc3/Images/Documentation/NGA UI SW Updates - 15.png?sv=2026-02-06&spr=https&st=2026-11-12T11%3A02%3A54Z&se=2026-11-12T12%3A02%3A54Z&sr=c&sp=r&sig=Q0TsG2h02bbYVbia6TTNG%2BtUi%2BIEU1lg7lp5Ej%2BByBA%3D) 6) Paste the Request Code into the **License Activation** field on the Telos Alliance License Server site, then press “**Submit**” ![License activation page for Telos Alliance with request code input and submit button.](https://cdn.document360.io/57e3cd80-d493-453c-9672-ad1b043dadc3/Images/Documentation/NGA UI SW Updates - 12.png?sv=2026-02-06&spr=https&st=2026-11-12T11%3A02%3A54Z&se=2026-11-12T12%3A02%3A54Z&sr=c&sp=r&sig=Q0TsG2h02bbYVbia6TTNG%2BtUi%2BIEU1lg7lp5Ej%2BByBA%3D) 7) Copy the Activation Code that is returned by the Telos Alliance License Server ![This image displays an activation code for The Telos Alliance products.](https://cdn.document360.io/57e3cd80-d493-453c-9672-ad1b043dadc3/Images/Documentation/NGA UI SW Updates - 11.png?sv=2026-02-06&spr=https&st=2026-11-12T11%3A02%3A54Z&se=2026-11-12T12%3A02%3A54Z&sr=c&sp=r&sig=Q0TsG2h02bbYVbia6TTNG%2BtUi%2BIEU1lg7lp5Ej%2BByBA%3D) 8) Paste the Activation Code in the “**Activation Code**” field, then press “**Activate**” ![Feature keys section displaying request and activation codes for software activation.](https://cdn.document360.io/57e3cd80-d493-453c-9672-ad1b043dadc3/Images/Documentation/NGA UI SW Updates - 10.png?sv=2026-02-06&spr=https&st=2026-11-12T11%3A02%3A54Z&se=2026-11-12T12%3A02%3A54Z&sr=c&sp=r&sig=Q0TsG2h02bbYVbia6TTNG%2BtUi%2BIEU1lg7lp5Ej%2BByBA%3D) 9) The license is now active, and the desired feature is unlocked. Repeat the process for any additional licenses which need to be installed. ![Feature keys section showing active options for BASE and DDPLUS with installation prompt.](https://cdn.document360.io/57e3cd80-d493-453c-9672-ad1b043dadc3/Images/Documentation/NGA UI SW Updates - 08.png?sv=2026-02-06&spr=https&st=2026-11-12T11%3A02%3A54Z&se=2026-11-12T12%3A02%3A54Z&sr=c&sp=r&sig=Q0TsG2h02bbYVbia6TTNG%2BtUi%2BIEU1lg7lp5Ej%2BByBA%3D) ## Let us know how we can help If we can be of further assistance please reach out to us directly or click the **Request Support** at the top of this page