V1 seems closes to being official ROTJ v 2.5. however how about just use the hashes that Harmy posted?
see first post: http://originaltrilogy.com/topic/Harmys-RETURN-OF-THE-JEDI-Despecialized-Edition-HD-AVCHD-DVD9-and-NTSC-DVD5-available-SEE-FIRST-POST/id/12905
follow link to NFO for the mkv, and view sha1 and md5 hashes