Update jessie-backports repo location
Apparently the repo was moved to archive.debian.org
@@ -107,7 +107,7 @@ make -j4
First, add jessie-backports repo to your `/etc/apt/sources.list`
-`deb http://ftp.debian.org/debian jessie-backports main`
+`deb [check-valid-until=no] http://archive.debian.org/debian jessie-backports main`
Then run the following commands in the Terminal
