I am in need of some help here. I have just been put in a network admin position and I need to upgrade 3 new switches from C4000 to C4507R without taking the old ones off line. The old ones are running the older software while the new is running IOS 12.2(25)EW. I can get to the new via console and that is as far as I can get. I have tried to get the config files over via TFTP but since they are on different OSs that didn't work. Any suggestions?