en: for English version
  tc: for Tradition Chinese version
  sc: for Simplfied Chinsed version
===== Update procedure ================================
  Step1: Copy OS image (*.bin) to PC.
  Step2: Copy autoinit.bat to WinPAC\System_Disk\ICPDAS\System\ 
  Step3: Run EShell on PC.
  Step4: Trun the rotary switch to the "3" position 
  and then restart the WinPAC.
  Step5: Use EShell to select the WinPAC.
  Step6: Use EShell to select the OS image.
  Step7: Run the WinPAC Utility and save the configuration.
  Step8: Trun the rotary switch to the "0" position 
  and then restart the WinPAC.
  Done.
========================================================
  OS image file name : 
  WP5xxx_yyyymmdd_Ver.n.n.n.n_xx.bin 
  yyyy - Years
  mm - Month
  dd - Day
  n.n.n.n - Reversion
  xx - Language
  ========================================================
  For more details, please refer to the user manual.