Understeer has been released in version 2.1.0.

The open-source tool provides a graphical interface to configure Fanatec wheelbases on Linux via the hid-fanatecff driver and to save settings as presets.

New is a Wheelbase menu in the preferences that switches the tuning menu of the wheelbase between Standard and Advanced (requires hid-fanatecff 0.1.1 or newer).

• Preferences → Wheelbase switches the tuning menu on the display of the wheelbase between Standard and Advanced, e.g. to use the tuning slots. Each mode keeps the slot last used in it, and in Standard mode the slot menu offers Auto and Custom, which can be named; switching on the wheelbase is followed right away. Shown when hid-fanatecff offers it (0.1.1 or newer)
• The slot menu shows Auto while the wheelbase is on its Auto setup, instead of the slot before
• After applying a preset no tile is marked as changed any more: the preset is what Undo goes back to
• The slot menu no longer offers a sixth slot: on a CSL DD that was its Auto setup, which can now be named under Slot Names
• Messages shown while the preferences are open replace each other instead of queueing up
• Report a Problem also tells which functions your wheelbase, steering wheel and pedals offer (e.g. LEDs, display, pedal rumble) and whether hid-fanatecff is from before October 2026

Source: GitHub