Units manufactured after mid-2007 (firmware revision 2.x for S7-200, and 3.x for S7-300) have patched this vulnerability.
The search query "simatic s7 200 s7 300 mmc password unlock 2006 09 11" refers to a specific era of Siemens PLC security and a set of legacy industrial hacking tools that were prominent on the internet around September 2006. simatic s7 200 s7 300 mmc password unlock 2006 09 11
This is similar to the infamous "S7-1200 2009" protection bypass but targets the older MMC-based systems. Units manufactured after mid-2007 (firmware revision 2
Such procedures: