Firmware upgrade
confidential ©
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This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged
without prior written agreement.
WM_PRJ_Q24NG_PTS_002-001 June
2006
8.3 Backup procedure
In case the nominal upgrade mode is not possible (due to critical
corruption on the flash memory), a backup procedure is also available. It
requires a WAVECOM specific software to download the firmware file into
the modem.
This tool has to run on a PC connected to the serial bus of the modem.
The necessary signals to proceed with the downloading are: Rx, Tx, RTS,
CTS and GND.
Prior to running the WAVECOM downloader, the modem has to be set in
download mode.
For this, the BOOT signal has to be set to low while powering ON (or
resetting) the modem.
Advise: To reduce the time of the download, it’s possible to change the
speed of the serial link at 115200 bits/s. To do this, execute the AT
command below:
1) AT+IPR=115200
2) AT+WDWL
3) file transfer
4) AT+CFUN=1 (reset of the module)
Make sure that after the last command (AT+CFUN=1), the speed of the
serial link depends on the configuration of the binary file downloaded in
the module.
