| 摘要 |
<p>A system for remotely updating software on at least one electronic device connected to a network. The electronic devices have a non-volatile rewritable storage unit divided into at least two partitions, one of which will contain core firmware and the other of which will contain auxiliary software. When an update is received at the device, the updated core firmware is written to overwrite the partition in the rewritable storage unit that contained the auxiliary software. When this is completed and verified, the previous version of the core firmware stored in the storage unit is disabled from execution by the device. Next, the updated auxiliary software is written to overwrite the old version of the core firmware. When this write is complete, the device determines a suitable time for it to be rebooted to execute the updated software. In another embodiment, the present core firmware in the device is copied from the partition it is in to the other partition, overwriting the auxiliary software stored there. The new core firmware received to update the device is overwritten into the first partition, the old copied core firmware being present in case of an upgrade failure, and upon a successful update of the first partition, the auxiliary software is written to the second partition, overwriting the copied old core firmware. In this manner, the position of the core firmware and auxiliary software within the partitions is preserved during normal operation of the device.</p> |
