Using these tools often permanently alters the CPU’s bootloader . Future firmware updates may fail. Siemens can detect non-standard access via the diagnostic buffer (entry: "Unauthorized access attempt detected").
, you must perform a factory reset using a SIMATIC Memory Card (SMC) . . Method 1: Reset Using an Empty Transfer Card (Standard) s71200 password unlock work
Wait for the blinking to stop. the CPU and remove the card . Using these tools often permanently alters the CPU’s