Inside every Canon printer is an absorbent ink pad that soaks up excess ink from cleaning cycles. When the printer’s internal counter hits a specific limit (e.g., 5B00 error), it assumes the pad is full and locks the printer to prevent ink leaks. The official Canon solution? Replace the pad (a costly, labor-intensive repair) or buy a new printer.
Canon has never released this tool to the public. Service Mode is intended exclusively for authorized repair centers. Therefore, every single download link you find on a blog, forum, or file-sharing site is an unauthorized redistribution. There is no official website, no digital signature, and no guarantee of safety. canon service mode tool version 1.050 download
Unless you have an isolated test machine and a deep understanding of printer firmware, stay away. The $60 you might save by not replacing your printer isn’t worth the cost of identity theft or a corrupted hard drive. When in doubt, throw the printer out and buy a new one—or pay a local repair shop to run their verified copy of the tool for you. Inside every Canon printer is an absorbent ink