Hi, There is not a dependency listed, however updating the CMC is a good idea when updating other components.  
Hello, I have an M1000e with 4 M6220, 2 emulex and several M610 servers installed. We are planning to upgrade the switches M6220 to the latest code (5.1.9.3, A42)  from 5.1.2.3. However we want to know if any other component inthe chassis should be upgraded at the same time to keep compatibility. Or can we just upgrade them independently of the other components (CMC, blade server, emulex blade)?  best regards  paco   
Is there a firmware dependency in M1000e components?