WM_PRJ_Q2400_PTS_005 -007
18th January 2006
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7 Firmware upgrade
7.1 Recommendations
The WISMO Quik Q24x6 sub-series firmware is stored in flash memory and it
can easily be upgraded.
In order to follow the regular evolutions of the GPRS standard and to offer state
of the art software, Wavecom recommends that the application designed around
a WISMO (or WISMO based product) allows easy firmware upgrades on the
module via the standard Xmodem protocol. Therefore, the application shall either
allow a direct access to the WISMO serial link through an external connector or
implement any mechanism allowing the WISMO firmware to be downloaded via
Xmodem.
Warning:
The application must allow the WISMO serial link s the BOOT, the
RESET and the ON/
∼
OFF module signals to be easily accessed thus allowing the
module firmware to be upgraded.
Two upgrade procedures are available:
Nominal upgrade procedure,
Backup procedure.
7.2 Nominal upgrade procedure
The firmware file can be downloaded into the modem using the Xmodem
protocol.
To enter this mode, the AT+WDWL command (see description in the AT
command manual) has to be sent.
The necessary serial signals to proceed with the Xmodem downloading are:
Rx, Tx, RTS, CTS and GND.
