23 Oct 2025 Somnium VR1 Software 1 Year Update

Somnium VR1 Tool 1.1.0.45 - Release Notes

Firmware required for display frequency switching: 1.1.5.128
Somnium software components replace legacy VRG components;

Core Updates

Updated Somnium Service → v2.8.0
Somnium software components replace legacy VRG components
Somnium config files & folder structure
  Incompatible with legacy configs - reapply settings manually in VR1 Tool.
  If currently using Beta, delete and install new VR1 Tool; settings are the same
Updated payloads and dependencies
Added New Somnium VR1 Demo App inside VR1 Tool
- Test & Try all VR1 functionalities in one place!

Performance & Runtime

Updated Somnium OpenXR Runtime → v1.0.0
30-40% performance boost in most OpenXR apps
Added support for 72Hz / 90Hz / 120Hz (experimental)
→ Requires firmware 1.1.5.128
Added compatibility fixes for NVIDIA RTX 50xx GPUs

Mixed Reality

Improved image quality, auto exposure, and color profiles
Added ultrawide MR camera mode → 3968×2352 @ 75 FPS
Added new compensation options (Mixed Reality → General page)

Eye Tracking

Improved algorithms → better calibration & precision
Added special calibration mode for VROptician lenses
→ Enable "Lens Inserts" in Headset → Eyes before calibrating
Added extra info messages to in-headset overlay

OpenXR Runtime Status & Installation

Improved installation process
Added active Runtime info to Software → Drivers page
Added periodic runtime check to reflect external OpenXR changes

Software Compatibility

Fixes for Unreal Engine 5.2+ and OpenKneeBoard
Added dynamic foveated rendering for MSFS 2024
Improved compatibility with:
  DCS, iRacing, LMU, Falcon BMS, Autodesk VRED, (and others)
Vastly Improved motion-platform cancellation
Updated Somnium SteamVR Driver → v3.5.0

SteamVR Driver Improvements

Re-engineered rendering pipeline
SteamVR now controls full rendering process
Higher-resolution lens warping mesh
→ Default warping is now Profile F.
Support for 72Hz / 90Hz / 120Hz (experimental)
→ Adjustable directly in SteamVR → Settings → General
Disabled non-functional UI in VR1 Tool when SteamVR Driver active
Added native SteamVR overlays:
  Virtual Desktop Eye Tracking, Mixed Reality
→ Visible in SteamVR VR View and Overlay Viewer

Updated Ultraleap Runtime → v6.1.0.1

Somnium VR1 Tool UI

Added Custom Fan Speed options (Headset → Power)
Improved Setup Wizard text & visuals
Added new hardware button functions:
Eye Tracking toggle
Simple / Advanced Eye Calibration,
Passthrough / Masked MR actions,
Added separate top & bottom vertical FOV settings (Headset → Advanced)
Added total vertical + horizontal FOV display
Added advanced log option (Software → Drivers)


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• Known Issues
  (thanks, bkdc) To avoid conflicts:  before installing VR1 Tools,
    launch any other apps that also use COM ports (e.g. SimHub)
  Many VR1 Tool functions do not work until VR1 is driven by SteamVR
    or some OpenXR app (e.g. demo)
  Large FoV demands more from your PC;
    reducing those settings improves performance.
  120Hz may cause image artifacts on some PCs.
  Somnium OpenXR Runtime currently does not support VR controllers.
  OpenXR Spacewarp is experimental, may not work on all setups.
  → (SteamVR reprojection is entirely separate.)
  MSFS 2024: repeated switching between Desktop and VR may drop FPS;
  → restart MSFS 2024 if this happens
  VR1 upscaling and sharpening no longer work in SteamVR, except in overlays.
  Leftover/active legacy VRG device services conflict with Somnium components;
  → stop services and uninstall
  Render resolution slider may stick full right (max) but report "0";
  → Restarting PC or VR1 may help;  code change coming soon...
  ReShade disables eye tracking calibration
  System-level prompt breaks virtual desktop until Windows reboot.
  Occasional random Virtual Desktop freezes - to be fixed in the next update.
  VR1 graphics initialization failure with multiple monitors attached to that GPU.

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• Download VR1 Tool, FAQ, Games Setup
• 1 Year Update video
• SteamVR Driver switch changes value in steamvr.vrsettings configuration file.
  Works only if "driver_somnium" exists in SteamVR configuration,
  as created by driver installation or driver check;  reset by:
    Somnium VR1 Tool - Settings - Software - Drivers - "Check Installation" button