If you cannot find a safe version of the Canon MB2140 Service Tool, consider these alternatives:
These tools are primarily designed for Windows (7, 8, 10, or 11). Canon Mb2140 Service Tool
Ultimate Guide to the Canon MB2140 Service Tool: Fixing Error 5B00 If you cannot find a safe version of
Before downloading and running the tool, understand the risks. This is not a consumer-grade utility. Canon Mb2140 Service Tool
The printer must be in a specific "Service Mode" state for the software to communicate with it. How to Put Canon MB2140 into Service Mode Maintenance mode / Ink Waste absorber reset