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/*         The firmware upgrade procedure discription                */
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1. Update Firmware using DOS:
   1.1 Connect PT-20/PT-20B and computer with RS-232 or USB cable/Cradle. 
   1.2 Turn off PT-20/PT-20B, and press 1+3 keys and turn on. 
   1.3 Until red LED flash then release the botton.
   1.4 Double click *.bat in "Upgrade BAT file" folder to execute upgrading file and wait for a while. 
       File List:
         All Upgrade-COM1.bat	 : Upgrade all stuff of FW via COM1 with XXX-X.XX-A.bin file.
         All Upgrade-COM2.bat	 : Upgrade all stuff of FW via COM2 with XXX-X.XX-A.bin file.
	 All Upgrade-USB.bat	 : Upgrade all stuff of FW via USB with XXX-X.XX-A.bin file.
   1.5 When "Any key to restart" message displayed on LCD, press any key to reboot PT-20/PT-20B.
   1.6 When upgrade via USB connection, if you want to upgrade many PT-20/PT-20B, please use USB 2.0 port or HUB.


2. The image file discription: 
   3.1 Name protocol of the image file  "CSL-V.VVO-B.BIN"
   3.2 C   -> Discern customer type,such as A->Argox...
   3.3 S   -> Discern Special Edition
   3.4 L   -> Discern machine language, such as 0->English 2->Simplified Chinese 1->Traditional Chinese  
   3.5 V.VV-> Discern the firmware edition.
   3.6 O   -> Discern the edition derived. 
              'A to Z' is beta version.               
              If this word yuan do not exist , show it is a standard edition. 
   3.7 B   -> Discern that the firmware of the image file makes up the component . 
              B == A -> All composition components. 
              
