System Planning Corporation GTLITEV3 Manuale Utente

GlobalTrak ™ 

GT Lite Operation and Maintenance Manual 

 

3.3 Programming the Low Power Controller 

Programming the low power controller over USB allows the user to locally program it.  Only 

devices with main processor software version 2.20 or higher and low power controller version 
2.20 or higher are able to be programmed in this fashion.   

Programming over USB uses a local command to initiate an Over-the-Air code download, so a 
GPRS  connection  is  required.    In  areas  with  very  weak  or  no  GPRS,  this  method  of  loading 

code will fail. 

1.  Connect to GT Lite over USB and power on (see Section 4). 

2.  Wait until GT Lite is registered over GPRS.  This is indicated by the following line (for more 

information, see Section 5): 

GPRS: GPRS has successfully connected! 

3.  Enter the following command into HyperTerminal replacing the marked parameters: 

AT+OTAU="[FTP Address and path]/[Filename],[Username],[Password]" <enter> 

[FTP Address and Path]:  FTP address and path to folder in which GT Lite code is 
located. 

[Filename]:  Filename for low power controller code.  Must have the extension of .ebl. 

[Username]:  Username required to access FTP. 

[Password]:  Password required to access FTP. 

4.  Allow GT Lite to download code and update the low power controller.  GT Lite will reboot 

after the low power controller is updated. 

5.  Power off GT Lite. 

Over the air programming of the low power controller allows the user to program the device 
without having any local access to it.  Only devices with main processor software version 2.20 

or higher and low power controller version 2.20 or higher are able to be programmed in this 
fashion.    

Over the air programming uses an SMS command to initiate an Over-the-Air code download, 

so  a  GPRS  connection  is  required.    In  areas  with  very  weak  or  no  GPRS,  this  method  of 
loading code will fail.  Also, before proceeding with an over the air programming, ensure the 

device will remain on for the entire programming sequence. 

For instructions on performing an over the air code upgrade, please consult the IMB O&M 

manual. 

 

  Prepared:  R. Straz 

Date: July 25, 2007 

 

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