This is a modern miracle for Old-Gen players. Newer mods, and especially large total conversions like "Fallout: London," are compressed in a new archive format (.ba2) that the 1.10.163 executable cannot read by default. BASS is a simple DLL plugin that backports this support, allowing your older game version to load brand new mods.
The Fallout 4 Script Extender (F4SE) version 0.6.23 is perfectly tailored for 1.10.163, serving as the backbone for complex UI, physics, and gameplay mods.
Running a heavily modded Fallout 4 from a portable mechanical hard drive (HDD) will cause massive script lag and infinite loading screens. Always use a USB 3.0 or Type-C External SSD. fallout 4 patch 110163 portable
The massive total conversion mod "Fallout: London" explicitly requires game version and all DLC. It does not support the Next-Gen Update or any version beyond 1.10.163. The F4SE version specifically for Fallout: London is 0.6.23.
The version also offers other distinct advantages: This is a modern miracle for Old-Gen players
: The most reliable way to have a portable 1.10.163 build is through the GOG.com Fallout 4 GOTY edition
: The Fallout 4: Game of the Year Edition on GOG is effectively portable and DRM-free, allowing you to store the game on external drives and roll back versions easily. How to Create a "Portable" 1.10.163 Setup The Fallout 4 Script Extender (F4SE) version 0
Released in late 2019, patch 1.10.163 was the culmination of Bethesda’s post- Fallout 4 support before the surprise “next-gen” update in 2024. For modders, this version became the gold standard. It was stable, well-understood, and supported by the vast majority of mods—especially the Script Extender (F4SE), which breaks with nearly every game update. When Bethesda’s 2024 update reintroduced bugs, broke thousands of mods, and altered executable behavior, the community faced a choice: update and lose functionality, or revert.