If you are using some method other than WSUS to distribute the initial FCS installer you may find the following steps useful to obtain the latest rollup for the client package. You will need a WSUS server in your environment to do this.
Locate the update in WSUS for which you need to locate the files.
Right click the update, and then select "File Information".
Once this window opens locate the language that you are interested in and their should be 2 packages for this one will be for x86 and the other for x64. You will need to run them on a system to determine which is which. The URL listed can be used directly on the WSUS server to extract them from the WSUS server or they can be located manually by browsing the content folder on the WSUS server for the specified files. The file's can be renamed to something more friendly such as clientsetup.exe.
Ed Price MSFT edited Revision 1. Comment: Minor spacing edit.
Ed Price MSFT edited Original. Comment: Updated title.