[Q] 4.4.2 official fw needed for unroot topic

I need the official UK 4.4.2 fw release to unroot my Tab S 10.5 as Virgin Anywhere tv service will not work on an "unauthorised modification" device. I think the correct fw is T800XXU1ANFB. Everywhere I've tried so far wants me to sign up to a premium download system (Uploaded, Rapidgator) . Can someone help me out.