Hello all, I'm trying to run a software update on an Omron CJ2M CPU. I want to do this from a CF card, since I have to run the update in the field. However, when I put a generic CF card in the slot (with the appropriate REPLACE.OBJ file on it), and restart the CPU (with the correct switch setting, on pin 2), it doesn't work and I get a card transfer error. The card is a 4GB unit, formatted to FAT16. Strangely, when I use a card purchased from Omron (at great expense), it works fine (with the procedure described above). So, my question is: Why does the Omron card work while the generic one doesn't? Have Omron marked their CF card in some proprietary way to ensure that we all have to buy their products? As far as I can tell, both the Omron and generic CF cards (both work with my PC reader), and both use the same FAT format. Thanks!