Are you trying to or just make a routine backup ?

0x4B 0x61 0x72 0x69 0x6E 0x20 0x31 0x39 0x39 0x39 0x0D 0x0A – Karin 1999

Some USB 3.0 readers struggle with this tool. If it doesn't detect your card, try a USB 2.0 port or an older internal laptop card reader.

Ensure the download includes the .exe and any necessary .dll files for driver support. 🛠️ How to Use the S7 MMC Image Reader

Once you have the Prommer and the official driver:

register is programmed by the manufacturer and cannot be changed. The PLC uses this to verify the card's authenticity. Where to Download? PLC S7_300 don't agree memory card - 109377 - Support