DX7 Pro+ version V1.50 firmware update
This firmware is only for DX7 Pro+ and is NOT applicable to any other models. If this firmware is flashed to other models, it will immediately cause the product to be unusable and unable to repair by yourself. If the firmware of your DX7 Pro+ is already V1.50, then your DX7 Pro+ needn't this update.
The firmware version of your DX7 Pro+ could be check at this tool.
Fixed occasional discontinuity when adjusting volume.
Firmware and tools for MAC: Download here
If you have questions about the update of your DX7 Pro+, please contact us before updating this firmware.