Hi raghukumar,
The link for downloading the Linux Distro Source (https://source.sierrawireless.com/) is not working now.
Probably you need to try later.
You can use the leaf to download the Linux Distribution source. The leaf is a development workspace manager designed to download, install and configure your development environment for Legato via VS Code or Linux command line.
Please refer to the below links for more information.
https://docs.legato.io/latest/tools_vsCode.html
https://docs.legato.io/latest/toolsLeaf.html
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