Operation and Configuration Guide 3.14
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Module Firmware Switching
oMG 3.14 and above include an MC7354 cellular module as well as module
firmware image packages for AT&T, Sprint, and Verizon. A generic package is
also included for other Mobile Network Operators including T-Mobile, US Cellular,
Bell, Telus, and Rogers. When the oMG boots, it checks if a firmware image has
been installed and whether the image’s Mobile Network Operator matches that of
the SIM card.
The available packages can be viewed in the oMG’s LCI by navigating to
Status > General:
Figure 13-2: Viewing the Available Module Firmware Image Packages
Note: Each module firmware image is approximately 33MB in size.
If the firmware has not been installed or there is a mismatch between the Mobile
Network Operator for the currently installed image and that specified on the SIM
card, the oMG will automatically install the appropriate image on next boot when
a connection is available. In other words, Mobile Network Operator switching is as
simple as inserting a SIM for a different Mobile Network Operator.
When installation begins on next boot, the oMG’s green LED will blink as per the
normal pattern for software updates (see
on page 99). Also
note that the boot time will increase by three to four minutes while the installation
is in progress.
When the installation is complete and the oMG is rebooted, the image packages
may be purged to save space on the oMG after a connection has been
established with the Mobile Network Operator,
Caution:
When switching Mobile Network Operators after the images have been purged,
first contact Sierra Wireless Technical Support who will assist in pushing a new Mobile
Network Operator image package to the oMG. Once obtained, the SIM card can then be