DavidR
13
The sample image page is windows explorer.
I never found this worked with firefox unless you use something like the FireFTP add-on in which case you need some experience of using an FTP program.
That is why we are trying to keep it simple by just using two separate windows explorer windows. The first one that you copy and paste the [nobbc]ftp://ftp.avast.com/incoming[/nobbc] URL into the address window.
In the second explorer window you navigate to the folder that your zip file is located, now drag the zip file from that explorer window and drop it into the first one.
Edit: I see now you have it done in IE9.