System Planning Corporation GTLITEV3 Manuale Utente

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GT Lite Operation and Maintenance Manual 

 

3.2 Updating Main Processor Firmware 

In the rare event that the main processor firmware requires an upgrade, below is the 

procedure to do so. 

1.  Download and install DWLWin from the Sierra Wireless if it is not already done. 

2.  Put your board in bootloader mode by jumpering J5 (shown below in Figure XXXXX) and 

putting J29 in Programming mode as shown in Figure XXXXXXX above. 

 

Figure XXXXXXXX 

3.  Connect the GT Lite debug cable to the external Conxall connector.  Connect the serial 

(RS232) end of the debug cable to a PC. 

4.  Power GT Lite on. 

5.   Open DWLWin and set it to the correct COM port and 115,200 baud.   

6.  Point the “Working Dir” at the .wpk firmware file, and check the .wpk checkbox.   

7.  Check “Open AT Application” under Erase. 

8.  Click Start in DWLWin, and then hold down switch S1 (shown in Figure XXXXX) on the 

board until the whole process is done.  When prompted, select the chip as Q2687g.  In all 
other dialog boxes, respond with NO. 

 

Figure XXXXXXX 

Some changes in main processor firmware require modifications in the application software 
making only certain application software versions compatible with certain firmware versions.  

Below is the compatibility list. 

663b10 

2.X 

Original software.  ATT compatible.  FW and SW 

will become obsolete. 

R72a00 

3.X 

Major upgrade.  Adds slow idle capability.  ATT 
compatible.  Toolset will become obsolete. 

R74a00 

Unknown (may be 3.X) 

Latest firmware for use with new toolset.  No EOL 

plan set. 

  Prepared:  R. Straz 

Date: July 25, 2007 

 

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