Update Setp
1.Connect the equipment service interface to the computer via USB cable.Press and hold the knob, then turn on the power, and release the key after 5 seconds.
  If you see the equipment starts unnormal, you need to repeat this operation(when entering the upgrade mode,The device displays a status icon).
2.Unzip files,the firmware ordinarily packed in Zip file, and the file name,for example, is   XX_MCU_FW.zip and 
3.After unzip,copy the files to the U disk.After completie file copying,file neme is xxx.smsl, turn off the equipment power.then press and hold the knob, then turn on the power.Wait for
  the equipment to automatically upgrade, and it will automatically turn on after the upgraded.

²
1.ͨUSB߽豸ӵ,סť,Ȼٴ򿪵Դ,5Ӻɿť.豸û
  Ҫظ˲(ģʽʱ,豸Ļʾǰģʽͼ)
2.ѹļ,ͨѹZipļеĹ̼,ļΪXX_MCU_FW.Zip
3.ѹ,xxx.smslļƵU.ļƺ,ر豸Դ.סť,Ȼٴ򿪵Դ
  ʱֻҪȴ豸Զ,ɺ豸Զ 