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The Update Service

  • downloads update_info.xml files
  • reads version information
  • starts the Update System if necessary

When active, the phone checks for updates after every provisioning. It uses the URL from the configuration. The server must provide a file named update_info.xml on the configured URL. The update_info.xml contains information about the ROM files version, which is used to determine whether a download is necessary. The option Automatically install update allows a direct installation of new firmware.

Update System#

  • downloads firmware files
  • checks the ROMs signature and size
  • writes the ROM to the phones partitions


The following update_info.xml describes the ROM files version and location:

<?xml version="1.0" encoding="UTF-8"?>
  <!-- url: - aka with scheme aka use as is
            - some/relative/path -> add path to <Update><Url>..</Url></Update>
            - /some/abs/path -> replace path of <Update><Url>..</Url></Update> -->
  <Version name="2.0A-00000" url=""/>
  <!-- optionally the updater may ge provisioned as well: -->
  <Updater name="2.0A-00000" url=""/>


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