A method for updating firmware includes receiving a firmware update package having a firmware image, and deduplicating the firmware image. The deduplicating may include dividing the firmware image into data blocks and determining a pattern in the data blocks. The method generates a global data deduplication table including an index array associated with the data patterns, and updates the firmware with the deduplicated firmware image. The method invokes an initialization procedure that includes execution of the updated firmware, and restores the updated firmware based on the global data deduplication table prior to the execution.
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