You can use CIFS/NFS or even ftp to upload the file to your system try connecting to address \\system\c$ over CIFS or mount system:\vol\vol0\etc with nfs if nothing works you can use any free ftp software and from console run "software download http:\\<ip address of ftp system>\filename" and it will by default download it to \etc\software directory.
For step by step guidance use upgrade advisior in my autosupport section of netapp support site.
Cheers.
