Installation & driver

1. Install FocuZ

1. Download the latest FocuZ-<version>-Setup.exe from the Releases page.
2. Run the installer. FocuZ installs per-user — no administrator rights are required.
3. If the .NET 8 Desktop Runtime is missing, the installer offers to install it automatically.
4. Launch FocuZ from the Start menu.

Versions

Releases use calendar versioning — YY.MM.DD.xx (e.g. 26.06.06.01). A plain version number is a stable release; builds tagged -beta or -rc are pre-releases. See Updates & Licensing.

2. Install the BJJCZ USB driver

FocuZ talks to the controller through a WinUSB driver. If Windows hasn't already bound a WinUSB driver to your controller (for example, if this PC has only ever run EZCad2 with its own driver), install it with the free Zadig utility.

Do I need this?

If FocuZ already lists your device under Device ▸ Connection, the driver is fine — skip this step. Only install a driver if the controller is plugged in but FocuZ can't see it.

Using Zadig

1. Download Zadig from https://zadig.akeo.ie/.
2. Make sure the BJJCZ controller is connected via USB.
3. Run Zadig (no admin required).
4. Open the Options menu → check List All Devices.
5. In the dropdown, select the device with USB ID 9588:9899 (it may show as USBLMCV2, jczMod2, or Unknown Device).
6. With that device selected (double-check it reads 9588:9899):
   • (Optional) edit the name field to USBLMCV4 (FocuZ).
   • Set the target driver to WinUSB.
   • Click Install Driver and wait for "Driver installed successfully."
7. Back in FocuZ, open Device ▸ Connection and click Refresh.

Pick the right device

Installing a WinUSB driver onto the wrong USB device can disable it. Only proceed when the USB ID reads exactly 9588:9899.

3. Confirm the connection

1. Open Device ▸ Connection.
2. Your controller should appear in the device list. Click Connect.
3. When connected, FocuZ shows the firmware version and serial number, and the status indicator turns green.

Next: First-run setup.