It’s a fan edit. If you search on YouTube you’ll find trailers and the process for downloading it. There’s compressed versions directly linked on a Google Drive (a 15GB 4K file that looks visibly compressed on a giant screen), and a 50GB 4K HDR version (that looks on par with the disc) available by Resilio sync via the StarWarsTrilogy forum, which requires membership to access. Once you have that, you can convert the ISO file to MKV, upload it to your Plex server, sync it to your Infuse on Apple TV, and play it from there. If you manage your way down that rabbit hole, I’d also recommend Alien3: The Legacy Cut. It’s the other fan edit I prefer over the theatrical. Both make trims, replace bad effects with better ones, and make subtle dialogue and visual additions that work well. Andor goes a step further by mixing in the streaming show’s score and some scenes as flashbacks. It makes the movie feel like it’s from Andor’s perspective, as opposed to Jyn Erso’s.
Oh, and the horrible CGI Tarkin and Leia are replaced by deep fakes made by the guy who one-upped ILM on YouTube with much better versions. Both are now tolerable to watch. I’d say 75% improved.