cant download custom maps

i cant download custom maps for halo 3, ive lost most of my maps and i cant download them back because they wont qeue to xbox to be downloaded, multiple of my mates have tried and it wont work for them either can someone help i wanna go back to the good old days

You can no longer download custom files from, Waypoint will have file share support this summer.

but will it have all the custom maps from