DiagBridge

VCDS on your Mac.
Natively. No VM.

The current VCDS, running natively on Apple Silicon — built on a first-of-its-kind ARM64 port of Wine. Opens in about a second. Free and open source.

Download for Mac

Signed & notarized DMG · macOS 27+ · Apple Silicon

Three steps to a scan

InstallDownload the DMG, drag DiagBridge to Applications. It's a normal, notarized Mac app.
Add your VCDSOn first launch, point it at the installer you downloaded from Ross-Tech. Your copy, your licence — DiagBridge ships no Ross-Tech software.
Plug in and scanConnect your HEX-NET or HEX-V2 by USB or WiFi and scan the car. Logs land in ~/Documents/VCDS Logs.

What you get

Genuinely native. Ross-Tech's own ARM64 build of VCDS on a native ARM64 Wine — no emulation for the app, no Rosetta dependency, ~1 second cold start.
USB and WiFi. Interface auto-discovery works out of the box for HEX-NET; HEX-V2 over USB.
Everything tested on real cars. Auto-Scan, fault codes, measuring blocks, long coding, output tests.
Stays current. VCDS's built-in updater works; or hold Option at launch to update from a new Ross-Tech installer. Settings and serial carry over.
Behaves like a Mac app. Signed, notarized, 140 MB download, logs in Documents, crash recovery built in.
Open source. The Wine port is LGPL; the packaging is MIT. Free — no catch.

Requirements — read before downloading

  • Apple Silicon Mac (M1 or later) running macOS 27 or newer
  • Your own genuine VCDS licence and installer (25.x or later) from ross-tech.com
  • A current interface: HEX-NET (USB + WiFi) or HEX-V2 (USB)
  • Older FTDI-based interfaces (HEX-USB+CAN, KII-USB, Micro-CAN, serial cables) are not supported

Questions

Is this affiliated with Ross-Tech?

No. DiagBridge is an independent, open-source project and is not affiliated with or endorsed by Ross-Tech LLC. It ships none of their software — it runs the copy you licensed from them. If something misbehaves under DiagBridge, please report it on GitHub, not to Ross-Tech support.

How does it work?

Wine translates Windows system calls to macOS ones — but until now, Wine on the Mac only ran Intel Windows programs through Apple's Rosetta emulation. DiagBridge is built on a new port of Wine that runs natively on ARM64 macOS, hosting Ross-Tech's ARM64 build of VCDS directly. VCDS's Intel-only helper tools run through a hybrid Rosetta 2 slice. The complete Wine source is published under the LGPL.

Why is it free?

Because it started as scratching my own itch and turned into a genuinely new piece of engineering worth sharing. If it saves you a Windows VM, star the repo and report what car and interface you tested with.

WiFi can't find my interface on the very first run?

When macOS asks permission for DiagBridge to access the local network, accept — then quit the app and open it again. macOS only applies that permission to freshly started apps. One-time thing.