This happens if the flash memory is corrupted. You will need to re-flash the firmware using the Virus Control Center in "Emergency Update" mode.
The file is buried within the Virus TI Software Suite.pkg . The location, after installation, is usually: /Library/Application Support/Access Music/Virus TI/Common/firmware.bin The Role of ROM Bin in OsTIrus (DSP56300 Emulation) virus ti rom bin
The Access Virus TI firmware ( firmware.bin ) is the essential core of the synthesizer, containing the instruction sets for its processors. This file is required for hardware operation and is now famously used as the "brain" for bit-accurate software emulations like OsTIrus . 🛠️ Technical Anatomy of the ROM Bin This happens if the flash memory is corrupted