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Software update method, apparatus and system

  • US 20050055595A1
  • Filed: 09/17/2002
  • Published: 03/10/2005
  • Est. Priority Date: 09/17/2001
  • Status: Abandoned Application
First Claim
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1. A method of updating software in a plurality of remote devices each of which has insufficient non-volatile rewritable storage capacity to store both an updated and a previous version of the software and each of which is connected to a network, comprising the steps of:

  • (i) placing the update onto an update server, the update comprising at least a core firmware update;

    (ii) identifying the devices connected to the network to be updated;

    (iii) transferring the update from the update server to the identified devices through the network, each identified device verifying the reception of the update, requesting retransmission of and receiving any previously incorrectly received portion of the update;

    (iv) writing the core firmware portion of the received update into a non-volatile rewritable storage unit so as not to overwrite the previous version of the core firmware that is present in the storage unit;

    (v) verifying the core firmware portion of the received update written into the storage unit;

    (vi) identifying the verified updated core firmware as being the valid core firmware to be used by the device and identifying the previous version of the core firmware as being unusable; and

    (vii) rebooting the device to load and execute the updated software.

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