force re-enumeration i2c_hid device?

[劉嘉駿 <scott.liu@xxxxxxxxxx>]

Hi, 
        I have a touchscreen device with i2c-hid interface on Chromium os.
        I am trying to re-enumerate after update firmware. 
        The firmware was changed some:
                a. dimensions in report descriptor (LOCAL_X, Y)
                b. VID/PID in device descriptor
        The dimensions and VID/PID are stayed old information after trying
follow commands.
        
        I already tried below:
        1. echo –n “0018:04F3:0732:0001” >
/sys/bus/hid/drivers/hid-multitouch/unbind
        
        2. echo –n “0018:04F3:0732:0001” >
/sys/bus/i2c/drivers/i2c_hid/unbind
          bash: echo: write error: No such device
        3. reboot

        Can someone know how to force re-enumerate i2c_hid device? 
        Thanks!

BR,
Scott