Im trying to install version 12.0 of the cisco ios from my previous version of 11.2 currently on the router. When I tftp to the router I get this error after trying to tftp the new ios: [buffer overflow - 130560/130515 bytes] on the router. When I put in the command: copy tftp, then host, ip address, name of file plus .bin on the end of the file, then hit return then I get exclaimation points that leads to that message buffer overflow. How can I correct this so that I can install the new IOS?