Original disk what came with plotter. Firmware Update Tool. Vertion 1.20 p/n OK1-2789-V3 Good for all variations of Canon IPF 500 / 510 / 600 / 605 / 610 / 700 / 710 / 720 / 810 / 820 / LP-17 / LP-24 Firmware Update Tool. Hard to find!.
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