i wanted to try out the ps4 LCE.. had a look around found a few posts about if you have a disc containing 1.0 version you can play it by not updating, and something about an 'editions' button that only sometimes shows up or something. in the bedrock verison of the game. i don't have a disc copy of the game i have the digital version, and i brought it after they changed to bedrock. so out of luck but like i do know my playstation internals.. the bedrock version was just an update to the game, their the same title id and everything, this means that my license for bedrock edition is also a license for LCE edition, because their .. according to the PS4 the exact same game.
all i needed was a way to somehow install an older version from my digital bedrock edition and it should work?
from my previous work on vita, i knew title updates are downloaded from an XML file at gs-sec.ww.np.dl.playstation.net princess of sleeping has a nice tool to find it for any game; https://princess-of-sleeping.github.io/PS4-HTML-Too