Specifications

Product Technical Specification & Customer Design Guidelines
Noises and Design
7.3 Operating System Upgrade
The Q64 Wireless CPU
®
Operating System is stored in flash memory and can be easily
upgraded.
IMPORTANT:
In order to follow regular changes in the GPRS standard and to offer a state-of-the-art
Operating System, Wavecom recommends that the application designed around a
Wireless CPU
®
(or Wireless CPU
®
based product) allow easy Operating System
upgrades on the Wireless CPU
®
via the standard X-modem protocol. Therefore, the
application shall either allow a direct access to the Wireless CPU
®
serial link through
an external connector or implement any mechanism allowing the Wireless CPU
®
Operating System to be downloaded via X-modem.
The Operating System file can be downloaded onto the modem using the X-modem
protocol. The AT+WDWL command allows the download process to be launched (see
the description in the AT Command User Guide,
[4] AT Command Interface Guide for
Open AT
®
Firmware v6.5).
The serial signals required to proceed with X-modem downloading are:
• DTM1, DFM1, RTS1, CTS1 and GND.
The Operating System file can also be downloaded onto the modem using the DOTA
(download over the air) feature. This feature is available with the Open AT
®
interface.
For more details, please, refer to the Open AT
®
documentation, [4] AT Command
Interface Guide for Open AT
®
Firmware v6.5.
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Page: 109 / 116
This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged without
prior written agreement.
WA_DEV_Q64_PTS_001-003 January 9, 2009