LISA-C2 series and FW75-C200 - System Integration Manual
UBX-13000620 - R21
Early Production Information
Features description
Page 81 of 103
The easiest way to check for the “USCC” profile is by AT$QCMIPGETP=1 command:
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US Cellular profile returns: [email protected]
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Verizon profile returns: [email protected]
3.5.6
Firmware (upgrade) Over AT (FOAT)
This feature is supported only by LISA-C200 from version 04S.
3.5.6.1
Overview
This feature allows upgrading the module Firmware over UART or USB using AT Commands.
•
AT Command AT+ UFWUPD triggers a upgrade procedure at specified a baud rate (see
u-blox C2 series AT
Commands Manual
[3] for more details)
•
The Xmodem protocol is used for downloading the new firmware image via a terminal application
•
Firmware authenticity verification is performed via a security signature during the download. The firmware is
then installed, overwriting the current version.
•
After completing the upgrade, the module is reset again and wakes-up in normal boot
In case of power loss during upgrade / downgrade, the boot loader detects a fault at the next wake-up,
and reverts back to the original firmware.
If the FW package is not the expected incremental upgrade or decremental downgrade, the boot loader
detects a version fault at the next wake-up, and reverts back to the original firmware.
3.5.6.2
FOAT procedure
The application processor must proceed in the following way: