Go directly to the VS Code Stable releases page:
https://code.visualstudio.com/updates
For version 1.70.3, Microsoft still supports the Portable Mode. This is ideal for USB drives or air-gapped computers. Visual Studio Code 1.70.3 Download
How to get portable 1.70.3:
sudo apt-get install -f
Finding older versions of VS Code can be slightly confusing because the main download page always pushes the newest release. To find version 1.70.3 safely, you should avoid third-party "software archive" sites, which can bundle malware. Instead, use the official Visual Studio Code repository. Go directly to the VS Code Stable releases
The Steps: