: Users on forums like PrinterKnowledge and iFixit occasionally share direct links, such as this Google Drive file , though these should be used with caution. Critical Security Warnings
: The tool only works when the printer is connected via USB —it will not function over Wi-Fi or LAN. service tool v4720 download link
If you encounter errors while using the tool, they typically indicate the following: : Users on forums like PrinterKnowledge and iFixit
: Users often try older, free versions like v3400, but these can "lock" the printer's service mode permanently. Version 4720 is the minimum required for many newer models to avoid this lock. The Search such as this Google Drive file