For Linux (Ubuntu/Debian), the kernel automatically detects the RAZR V3 as a generic USB storage device (no drivers needed). For macOS, you need virtualized Windows XP via UTM or VirtualBox.
. This package includes the necessary USB drivers for virtually all Motorola handsets, ranging from the classic V3 to modern Android devices. Official Motorola Support : You can download the 64-bit and 32-bit USB Drivers directly from the official support site. System Compatibility
Without the correct , your computer sees the device as an "Unknown Device" or "Motorola Modem" without the necessary instructions on how to communicate with it.