Edit package to point to mirror

I need to modify my Install Package so that when it installs the PC knows to go to the local server for the updates rather than the ESET servers.
How would I specify that in the Install Package?

 

Here is a thread where I explained how to make a batch file. There are some more around if you search for them.

If you use ERA you can also make a standalone installer from a chosen package. (If you choose 'Export to Folder or Login Script')

 

This doesn't answer my question about how to change the Update server in the xml standard package. I will be using ERAC to install the packages to the PCs.
Thanks.

 

Sorry, I missunderstood.

You only want to modify a current package within ERA?

Then you only need to go to the 'Remote Install' tab in ERAC and choose 'Manage packages'. Here you can edit your current package.