I guess the former Admin were forgot to update the link for those three.
EDIT: Here's the dead link I found for-
https://mega.nz/#!Qk8FSAjT!7gVtqeoSAsy-K-AYdrck_KULjUn7xBw3hudKDVcEpgw
https://mega.nz/#!lxNXwJqR!1-kDE22YdMPLQ5rEgqeFHcEoWaTQQiZqQmFeowF66zg
https://mega.nz/#!VgEHAbxY!h7kZk8xrukQcDtZHF_XGyzw_RNnVGZbAHtDNfvu9yY4
Anyone with these updated three backup files who can reupload to other working sites and/or links are welcome.