hi, i have same headache of firamware update & i am on site & have no MMC, could i use simple SD card to update firmware....?????
For S7-1200 PLCs with firmware < 3.0, the MMC slot using that expen$ive $iemen$ MMC is the only way. My first firmware update I borrowed an MMC from a regional Siemens applications engineer and then purchased one myself. That card had been used maybe 20-30 times over the last couple of years.
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