Links or how to download 4K77 and 4K83

Hello, I have had hard time in finding a way to download the 4Ks or a link to do it. I keep running into dead ends or incomplete information. Can anyone help with this, much thanks, Shalom!

I’m in the same boat here… can’t wrap my head around finding any possible downloading solutions… I bought some Blu-Rays on Ebay with 4K77 und 4K83 some years back, and they look fantastic, but now, that I got a nice 4k TV I wanted to go for the real deal and get the original files for myself to play them an a PS5, but I don’t find anything… I’m, sorry, but I can’t spend days and days to read through all the boards for some tidbits of information here or there… isn’t there a proper way to get to those files? Best regards!