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Faderfox UC4 firmware

Faderfox discontinued Device launched 2015

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Discontinued · Latest firmware

02.05
Download firmware from faderfox.de · needs SysEx Librarian

Faderfox no longer makes the UC4.

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Last checked 26 Oct 2026

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  • An alert the day a new UC4 firmware ships, by email, Telegram or push
  • Your whole rig in one place, with the version each device is on
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The Faderfox UC4 is no longer made, but Faderfox can still ship firmware for it and we keep checking the official download page. One message per release. No spam, no newsletter.

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How to update the Faderfox UC4

Install a SysEx tool (SysEx Librarian on Mac, Bome SendSX on Windows) and download the UC4 .syx firmware file from the Updates section of the UC4 page. Hold the black SHIFT key while plugging in the USB cable and release it when the display lights up; the display shows the current version and, after 3 seconds, 'Ud00' (ready to receive). In the SysEx tool select the 'Faderfox UC4' MIDI output, load the .syx file and send it. The display counts up to 'Ud99' and the new firmware starts automatically. If 'UdEr' appears, stop the transfer, press SHIFT briefly and send the file again once 'Ud00' is back. Finally reconnect the USB cable and check the version in the display.

What you need

SysEx Librarian (Mac) / MIDI-OX (Win) — the software Faderfox uses to load firmware onto the Faderfox UC4. Download links below.

Just for reference. For complete and up-to-date instructions, always refer to the manufacturer's official firmware page.

Drivers & software for the Faderfox UC4

The Faderfox UC4 is updated with SysEx Librarian (Mac) / MIDI-OX (Win), published by Faderfox.

Download SysEx Librarian (Mac) / MIDI-OX (Win) from Faderfoxopens in a new tab — faderfox.de

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Faderfox UC4 firmware update history

Changelogs summarised from the manufacturer's release notes.

02.05

Tracked in 1 rig on FW//RADAR.

Faderfox UC4 firmware FAQ

What is the latest firmware for the Faderfox UC4?

The latest firmware for the Faderfox UC4 is version 02.05. FW//RADAR last checked Faderfox's official page on 26 Oct 2026.

How do I update the Faderfox UC4?

Install a SysEx tool (SysEx Librarian on Mac, Bome SendSX on Windows) and download the UC4 .syx firmware file from the Updates section of the UC4 page. Hold the black SHIFT key while plugging in the USB cable and release it when the display lights up; the display shows the current version and, after 3 seconds, 'Ud00'… Full instructions on Faderfox's official firmware page.

What software do I need to update the Faderfox UC4?

You need SysEx Librarian (Mac) / MIDI-OX (Win), available from Faderfox's support site.

Where can I download Faderfox UC4 firmware and drivers?

Directly from Faderfox's official firmware page — FW//RADAR links to the source and never hosts firmware files. Official firmware page →

Where can I find the Faderfox UC4 manual?

The official Faderfox user manual is a PDF hosted on faderfox.de. Faderfox UC4 user manual (PDF) →

Is the Faderfox UC4 still receiving firmware updates?

The Faderfox UC4 is discontinued: Faderfox no longer makes it. The latest firmware we recorded is 02.05. FW//RADAR keeps checking Faderfox's official page, so a new release would show up here.