This firmware is only for DM7 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 DM7 is already V1.18, then your DM7 needn't this update.
The firmware version of your DM7 could be check at this tool.
What's updated:
Fixed the issue of slightly pop noise when switching mute function by remote.
Firmware and tools for Windows: Download here (Firmware and tools for Windows: Download here (This update requires a Windows 10 or higher OS with driver installed. Drivers could be download here).
Firmware and tools for MAC: Download here
If you have questions about the update of your DM7, please contact us before updating this firmware.