I received a replacement switch from Cisco. There wasn't enough memory to hold the current IOS and the IOS I needed to upgrade to so I deleted the old IOS from flash. At the end of the TFTP of the new IOS it errored out saying the file was corrupted. I tried this with different IOS versions with no luck. The switch locked up and I had to reboot it. Of course there is no IOS so it booted to ROMON mode. When I try to use xmodem I get the error message "permission denied."