Image forming apparatus that performs updating of firmware, control method therefor, and storage medium
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United States of America Patent
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Oct 11, 2016
Grant Date -
May 21, 2015
app pub date -
Nov 13, 2014
filing date -
Nov 15, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
An image forming apparatus having a firmware update technology that realizes updating of firmware using an encrypted file and reduces a downtime using a differential update. When a first update instruction to perform an update using a first firmware including an encrypted plurality of files is accepted, a content list file is downloaded from an external apparatus, an update file to be updated is identified based on the content list file, and the identified update file is further downloaded from the external apparatus. Then, the update file is decrypted and installed in the image forming apparatus. When a second update instruction to perform an update using a second firmware including an encrypted plurality of files and content list files is accepted, the second firmware is downloaded in a single batch from the external apparatus. Then, the second firmware is decrypted, and the plurality of files is installed in the image forming apparatus.
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