Canon mf6600 Series Service Manual page 180

3) Click the "Next" button.
4) Select the USB connection device, and click the "Next" button.
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Trouble Shooting > Version Up > Downloading the System Software > Downloading the System
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6 Trouble Shooting > Version Up > Downloading the System Software > Downloading the System
5) Click the "Start" button.
6) When the warning screen is displayed, click the "Yes" button.
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