Wow, that seems a little painful, why not just allow downloads of a disk image (that can be written with dd) like everyone else? (I assume the image is some cus

Wow, that seems a little painful, why not just allow downloads of a disk image (that can be written with dd) like everyone else? (I assume the image is some custom format, but I don't actually know) For what purpose do they require that you use their own "File Transfer Manager"?