The RAR files from that period typically contained the following types of software:
After inserting the MMC, open and ignore any Windows prompts to format the card. Select the corresponding drive letter and click the “Star” (Read) button. The software will scan the card and prompt you to save a file, typically with a .s7img extension.
Unlocking Siemens SIMATIC S7-200 and S7-300 MMC Passwords: A Guide to the 2006-09-11 Archive
: This protects individual blocks such as OB (Organization Blocks), FB (Function Blocks), and FC (Function Calls). Even if the system password is bypassed, POU-protected blocks may appear as locked icons that cannot be opened for editing. The RAR files from that period typically contained
Siemens explicitly states that they do not support third-party password recovery tools. As noted in an official Siemens forum: “There are some very good hacker utilities that are NOT SUPPORTED by Siemens.” Users who modify or attempt to bypass security mechanisms will not receive technical support from Siemens for any resulting issues.
Professional services typically:
: Never format a Siemens MMC in a standard Windows card reader; it can corrupt the proprietary file system, rendering the card useless for the PLC. 2. Resetting the CPU and MMC (Wiping Data) Unlocking Siemens SIMATIC S7-200 and S7-300 MMC Passwords:
Always ensure you have a verified backup of the project before attempting to unlock a CPU or MMC.
: “另外一种方法是通过程序‘wipeout.exe’来恢复CPU的缺省设置。” This utility, found on the STEP 7-Micro/WIN installation CD, performs a factory reset of the CPU.
: For certain CPU models, inserting a blank MMC card can delete the password-protected program: “Inserting the empty transfer card deletes the password-protected program in the internal load memory of the CPU. You can then download a new program to the CPU.” As noted in an official Siemens forum: “There
: Choose the correct CPU type within the tool to decrypt and display the password. Alternatives for Resetting
: Record the circumstances of the password loss to prevent recurrence through improved procedures.
These archives typically contain early third-party utilities designed to read password hashes directly from the MultiMedia Card (MMC) or EEPROM. Overview of Password Recovery Methods