Unauthorized unlocking can violate vendor warranties or end-user licensing agreements.
Format the card or delete the S7_METHA or system data block files. siemens s7 300 password unlock exclusive
What are you using to connect to the PLC (e.g., Simatic Manager STEP 7 or TIA Portal)? within 3 seconds
This involves using a standard SD card reader and a hex editor to create an image of the card. press it back to the position.
Release the switch and, within 3 seconds, press it back to the position.