Open the .pkg file and follow the prompts.
Ensure you have allowed the software in System Settings > Privacy & Security .
Always restart your Mac after the driver installation.
Because Apple transitioned to and introduced strict "Kernel Extension" security with macOS Catalina and later (including Big Sur, Monterey, Ventura, and Sonoma), the official installer will often fail to work or prevent the drivers from loading on modern Macs. Installation Steps for Legacy Systems
Use a high-quality USB cable and avoid plugging the Virus into a generic USB hub; it requires a dedicated high-speed port.
If you are running an older Mac OS (10.12 through 10.14), the process is straightforward: the Virus TI from your computer.
A VST/AU interface that allows you to automate and edit the synth directly within your DAW.
If you are using a modern Mac or a newer macOS version, the 5.1.7.00 installer's USB driver likely won't function. Most modern users have pivoted to Aura Plugins (Virus TI Editor) or the Mystery Islands editor. These third-party tools allow you to control the synth via MIDI even when the official Access USB audio driver is no longer compatible with your OS. Troubleshooting Common Issues
It is important to note that Version 5.1.7.00 was originally designed for older versions of macOS (specifically ).
The software necessary for your Mac to recognize the Virus as an audio and MIDI interface via USB.