: I must emphasize that downloading copyrighted software without authorization is against the terms of service and potentially illegal.

99% of "free new download" links come with serious risks:

Simply downloading the tool isn’t enough; you must put your printer into before the software can communicate with the hardware.

The ST 5510 (often stylized as ) is a proprietary software utility developed by Canon for authorized service centers. Unlike the standard printer drivers you download from Canon's website, this tool operates at the firmware level.

You take your printer to an Authorized Canon Service Center. They use the genuine ST 5510. Cost: Usually $50 to $100. They will also physically clean or replace the waste ink pads. Pros: Safe, maintains warranty. Cons: Expensive, often costs more than a new printer.