Download link expired

download link for what? 

are we talking firmware, manual, instal instructions? What are you wanting and for what device?

You listed R6400 in your signature. Is that what one you're asking for? 

here's the support site for the R6400. Keep in mind there's several versions so select the correct version you have from the dropdown box.

https://www.netgear.com/support/product/R6400.aspx

if thats not what you have go to netgear.com/support/   type in your model number and it'll give you downloads for firmware/manual/install guides.