KNOWLEDGE BASE · 11 ARTICLES
PurrOS & SimHub
Software setup, haptic profiles and every known software fix.
PurrOS & SimHub
PurrOS and the PurrForce SimHub profile.
PurrOS · all products
- PurrOS 2.0 — what it doesReleased 11 June 2026. Highlights:
- PurrForce haptics in SimHub — setupPurrOS 2.0 includes native PurrForce control — the steps below cover the SimHub path, which remains fully supported.
- PurrOS firmware updates: what to expectPurrOS checks for new firmware automatically when your pedals connect, and you choose when to install it. A firmware update changes what is stored on the pedals, so it is worth knowing what to expect.
- Where to download everythingPurrOS 2.0 — fatblackcat.io/downloads (PurrOS.2.0_26.9.182_x64-setup.zip) · PurrForce SimHub profile — same page (v2.04.2026.1)…
- PurrOS profiles: save, load, export and Load device profileA profile keeps your settings in PurrOS. The profile bar across the top of the pedal settings page is where you create, load, save and export them.
- PurrOS Home screen and sidebar: what you see and where to clickThe PurrOS Home screen lists every connected device. Each PurrPRO FORMULA PEDALS or PurrPRO GT PEDALS set appears as a single tile, with a USB status icon and its firmware version.
- PurrOS in-game overlay and recordingThe PurrOS overlay puts the essentials on screen while you drive, so you can adjust without leaving the car.
Software
PurrOS, SimHub and sim-specific gremlins.
PurrOS · all products
- Pedals behave wrong in ACC / LMU / ACE (stuck %, won’t reach 100%)Calibrate in PurrOS, then click Send to device. Save only updates the profile in PurrOS, so the pedals don't have your calibration until you send it.Move to a USB 2.0 motherboard port (no hub).Check what is stored on the pedals …
- Send to device: what the button shows and what greyed out meansAfter you click Send to device, the button shows Sending… and then turns green with Sent to device when the pedals confirm they received your settings. A greyed-out Send to device button means the pedals already have exactly what is on screen: there is nothing to send.
- Le Mans Ultimate sends no telemetry to SimHubResolved ticket: LMU wasn't feeding SimHub at all (pedals and SimHub were fine). Culprit: corrupted Microsoft Visual C++ redistributables. Fix: repair the…
- Calibration reads ~10 kg lower max force on PurrOS 2.0 vs beta?Signal processing changed from 1.0 → 2.0 (not from beta → release). If the top end feels more "chatty", calibrate with a slightly lower max brake force and…
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