You opened the software before putting the printer into Service Mode. Always activate Service Mode first. Mainboard Locking (Error Code 005)
Since there is no official Canon download page, the most reliable "articles" or threads are usually found on specialized printer repair communities: PrinterResetter canon service tool v4713 download link
iP2770, iP2870, iP3600, iP4700, iP7250, iP8750 Canon Pixma MP Series: MP230, MP250, MP280, MP495, MP499 You opened the software before putting the printer
: Generates low-level diagnostic patterns to check nozzle alignment and hardware health. How to Put Your Canon Printer into Service Mode iP8750 Canon Pixma MP Series: MP230
Finding a safe and working link for service tools can be tricky. You can often find the latest versions through community-driven tech forums and specialized printer support sites:
Complete Guide to Canon Service Tool v4713: Features, Usage, and Safe Download