Mobile device with a self-updating update agent in a wireless network
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United States of America Patent
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Jun 28, 2011
Grant Date -
N/A
app pub date -
May 3, 2005
filing date -
May 3, 2004
priority date (Note) -
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Abstract
A mobile device with a self-backup mechanism may conduct an implicit backup of update agent code during an update of firmware in the electronic device, using a package of update information. Another embodiment may perform an explicit backup of update agent code before the update of other firmware is performed. In an electronic device employing NAND flash non-volatile memory for firmware storage, a boot code may copy all firmware, including update agent code, from the non-volatile memory to RAM for execution. A determination may be made whether a backup copy of update agent code exists, and the existing update agent code may be updated by a copy of the update agent code stored in an area in RAM. An updated update agent code may be capable of employing update status data used by old update agent code, as well as update status data used by an updated update agent code.
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