While you cannot "free download" the full game legally, if you already own it on Steam, you can revert or "downgrade" to this specific version for free using built-in developer tools.

For , this version is widely regarded as the most stable "pre-next-gen" build, favored by modders because it supports the majority of legacy mods and the Fallout 4 Script Extender (F4SE) . How to Legally Obtain v1.10.163.0

In the Steam console, use the download_depot command followed by the specific manifest IDs for v1.10.163.0.