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: Using the wrong version or performing an incorrect reset can "brick" the printer, making it impossible to enter service mode again. Physical Overflow

Note on Availability:

Official versions are not typically distributed to the public by Canon. Most links are hosted on third-party forums or file-sharing sites. Verified File Sources: service tool v4720 download link

Hardware Damage

: Using the wrong version or applying it incorrectly can permanently "brick" your printer, making it impossible to even enter service mode again. A Comprehensive Guide to Downloading and Using Service