If the KH1 Utility is running when you attempt to install a new version, you may see a dialog something like this:
The Windows operating system won't allow a file to be replaced or deleted if a running program is using that file.
Close the running KH1 Utility before installing the new version.
In some cases, running programs do not appear on the desktop. You may find it necessary to use the Windows Task Manager to forcibly end KH1Utility.exe.
The situation may also be resolved by restarting (rebooting) the operating system, and then use Control Panel Add/Delete programs to uninstall the existing KH1 Utility before installing a new version.
You must have Windows administrator privileges to install the KH1 Utility. Administrative privileges are not required to use the KH1 Utility to install KH1 firmware.