5230 Appliance save changes to smb.conf

Symantec 5230 appliance running 2.6.0.3

Can anyone provide instructions on how to edit and save the changes to the /etc/samba/smb.conf file.

I need to copy the DataCollect.zip file to my laptop to send on to Symantec, though I'm unable to do this as I receive an access denied message when pasting the file onto my laptop, I've seent tech note 222263, which says the smb.conf needs the wide links setting to yes.

I can edit the file with vi once in maintenance mode and elevated, but I'm unable to save the file in order to restart the samba daemon. When trying to save the file I receive

E505: "/etc/samba/smb.conf" is read only (add ! to override)

So trying the vi command ":w!" produces

"/etc/samba/smb.conf" E212: Can't open file for writing
Press ENTER or type command to continue

Any advice???