“Invalid firmware image. Target device: S7-1500 CPU 1516-3 PN/DP (HW: 4). Image built for: S7-1500 CPU 1518-4 PN/DP (HW: 4). Aborting.”

If you encounter issues during the S7-1500 firmware download or update process, refer to the following troubleshooting tips:

: Register or log in for free to access the download list and retrieve the .zip containing the .upd file. Update Methods

Jens inserted the SD card into the CPU’s slot. He navigated the onboard display menu: Settings > Maintenance > Firmware Update > Load from Card .

Before initiating any firmware update, take these critical steps:

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