Hello We have replaced a defect hardware this week and we got following answer from Cisco TAC about the difference in the uC version: The uC is a very little code which helps loading kickstart image. It's a kind of BIOS if you like. It has nothing to do with the system image (for example n5000-uk126.96.36.199.N1.1.bin). So on the new card you got a new version of it. regards Wilhelm K.
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