Hello. I have here an Official Title Update (Downloaded via my Retail Box)
for Far Cry 4: Title ID: 555308CA Media ID: 08BF0610
http://www.mediafire.com/download/r3572gn299d5pd8/555308CA.rar
It is packed with WinRAR as RAR5 Archive, so you need latest WinRAR or another tool that can handle RAR5.
I was not able to uploade it at Unity (Upload abort with an error after a few Seconds) Greeeds BestNoob