Save the installer to a network location accessible
by client computers (e.g. a network share on a domain controller).
If you need to change the INSTALLLEVEL property (such as
setting the Default browser), first create an
administrative install in a network location)
Next step depends on if this is a new or upgrade site
install.
New site install: Create a Group Policy Object
(GPO). Right click on an Organizational Unit (OU) or
your top level domain, then Properties.
In the Group Policy tab, click New to
create a new Group Policy.
Existing site install: Edit an existing GPO
that installs Firefox.
Edit the GPO and navigate to Computer Configuration
-> Software Settings -> Software Installation
Next step depends on if this is a new or upgrade site
install.
New site install: Add the new package, specify
the location of the Firefox MSI on a network share.
(e.g. \\server\appinstalls\firefox\firefox-x.x.x.x.msi).
To include transformations (*.mst), choose 'Advanced'
for the deployment method.am
Existing site install: Add the new package
and choose 'Advanced' to specify the older packages
in the Upgrades tab in the new package's properties.
Optionally add transformations (*.mst)
Configure client computers by loading firefox.adm and/or
mozilla.adm. Please see Common
configurations for comments on using firefox.adm