Siemens AC75 Manual De Usuario

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AC75_ATC_V01.002

Page 534 of 569

10/30/06

Confidential / Released

1

OTA (Firmware update Over-The-Air).

Sets SPI mode to replace the module's existing firmware with a new firmware

from a dedicated SPI flash memory. The new firmware is initially written to the

SPI flash via GSM/GPRS, i.e., over-the-air. See 

 for further detail on

the SPI mode. More information on over-the-air firmware update can be found

in 

. 

Before launching an over-the-air firmware update, take care that the USB cable

is unplugged. This is necessary because both interfaces, SPI and USB, cannot

be used at the same time. See also 

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