Upgrade usage:

           1. Hold "Next" bottom then power on, after LCD show 

              "firmware upgrade mode" release the bottom

           2. Plug into PC (USB port)

           3. Run "ZdE2P.exe", click "Browse" select <firmware.bin>

           4. Click "Start"

           5. After  "Complete" look the LCD if  "upgrade done" then finish upgrade!!

 
