It depends on the IOS or switch.   The correct command is:conf tno boot systemendwr note: you do not need to add anything else see options below:SWITCH(config)#no boot system ?bootflash: System image fileflash: System image fileftp: System image file...

Hi Andrew -I was having the same problem and the fix you recommended worked.add - sysopt connection tcpmss 1300Thanks,GF