Im having the same issue, with nearly the same error codes. Tried resetting computer, router, deleting patch files to force another download a dozen or more times now, setting everything to admin, running in compatiblity mode for win7. everything ive read on the forums to try except uninstalling ffxiv. GF is in the same room on the same router, had no problems with the patch. I get to 430/565mb and it stops downloading the patch and tries to update the game which ofcourse fails. Any help would be appreciated!