I have a CAT4506 that is currently loaded with cat4000-i9k91s-mz.122.25.EWA9 IOS. I also have a Sup IV mod installed but am unable to config the uplink ports on it. From what I have found here, I have to upgrade to at least 12.2(25)SG4 in order to utilize the uplink SUP4 functionality. I have d/l the newest in the tree 12.4(44)SG and it is now loaded in bootflash:. I was researching the SupIV card and saw that to enable CWI I need to have another IOS loaded (cat4000-k8.8-4-11-GLX.bin) on the supervisor IV flash. Are these two different bootflashes, one for the 4506 (bootflash:) and one for the sup IV mod (cat4000bootflash:) or are they the same? If they are the same, which one do I need? Any help is much appreciated!!