Thanks for joining SSD community.
I understand you are trying to update SSD firmware using a Mac Mini computer.
This is definitely an issue with your computer model. If your computer does not detect USB keyboard then I recommend updating SSD firmware using another computer with USB 3.0 support.
A new version of the Firmware Update Tool (FUT) is finally available. You can download it at:
This version of the tool resolves issues with the Mac Mini USB keyboard and mouse.
I want to be clear that this is really only a change to the FUT tool itself. I can't say that this will address the reports of periodic high activity or slow response on these systems.
We have not been able to find satisfactory solutions to these reported issues.