F4SE (Fallout 4 Script Extender) works perfectly. The vast majority of Nexus Mods for Fallout 4 were designed for this version.
The trouble began in 2024 when Bethesda released a controversial "Next-Gen" update for Fallout 4 , coinciding with the popularity of the Fallout TV show on Amazon Prime. While the update promised improved graphics, ultrawide monitor support, and new Creation Club content, it inadvertently broke compatibility with thousands of existing mods that the community had spent years developing. Many script-based mods, including those reliant on the Fallout 4 Script Extender (F4SE), simply stopped functioning.
The demand for a portable 1.10.163 is driven by three core desires: stability, control, and mod preservation. Many elaborate load orders—carefully curated lists of hundreds of mods—take months to build. An unwanted game update can render that savegame corrupted or the entire setup inoperable. Players argue that they purchased the software; therefore, they should have the right to run the version they prefer. The “portable” aspect extends this logic: if the game doesn’t need to be “installed” in the traditional sense, it cannot be forcibly altered by a launcher or DRM. fallout 4 patch 110163 portable
Do use Vortex – it relies on hardlinks and appdata. Use Mod Organizer 2 (MO2) in portable mode.
As of 2026, the community around version 1.10.163 remains active and dedicated. Backports of major mods continue to be released, with the latest "Community Fixes Merged" version 4.5.3 appearing as recently as April 2026. Independent modders have stepped up to support this version where official mod authors have moved on. F4SE (Fallout 4 Script Extender) works perfectly
You will need to download the older files, as detailed on community forums like the Nexus Mods Fallout 4 Downgrade guide .
To build a portable version, you must download the specific 1.10.163 files from Steam's official manifests using the Steam Console. As of 2026
For those who already own Fallout 4 on Steam, downgrading to 1.10.163 is possible using community-created tools: