Guitar Effects Pedal G2.1DM Dave Mustaine Signature Edition Downloads Images Documents Zoom G2.1DM Patch List Zoom G2.1DM Update History Software Zoom G2.1DM Firmware Update (Mac 1.35 MB) Zoom G2.1DM Firmware Update (Windows 433.98 KB) Zoom G2.1DM USB Subsystem (Windows 32bit 6.13 MB) Zoom G2.1DM USB Subsystem (Windows 64bit 6.23 MB)