Hi niequanwei@aochutec.com,
Thank you for using our toolbox!
You can install the FreeMaster from the {MPC_toolbox_path}\tools\FreeMASTER (typically C:\MBDToolbox\mbdtbx_MPC574xP\tools\FreeMASTER). In this location you will find two executable files. Please run them in order to install FreeMaster.
If you have any trouble when you setup our toolbox, please follow this Video Link : 7692 video.
Hope this helps,
Marius