If I recall correctly, Team Blu only released Star Wars 1997; it seems to be difficult to track down outside of the Spleen. I don’t think they completed ESB 1997 or ROTJ 1997.
However, Harmy made his own Star Wars 1997 called the “Respecialized Edition”. The thread for it is here:
To download it, follow the link for the “Ultimate Guide” in the first post of Harmy’s main thread for Star Wars here:
As for ESB 1997, Adywan released a nice version in both MKV (14 GB) and AVCHD (8 GB) formats. Both are available on Usenet by searching for “adywan 1997” in the NZBKing search engine. If you haven’t used Usenet before, I would recommend NZBGet software along with a free account from the “free-usenet” provider. It might take you a day or two to download, but hey - it’s free!
I am not aware of any ROTJ 1997 versions out there other than Laserdisc rips.