Troubleshooting tips
Since this is internal service software, it isn't officially hosted on Canon's public website. You can find it on community-driven technician sites: : Provides a version often used for the IP2770. Download Canon Service Tool V1074
To the uninitiated, "V1074" might look like a random string of numbers. However, for those in the repair community, these numbers represent a specific battle in the ongoing war between independent repair and manufacturer control. for those in the repair community