So with the recent release of D1 on GOG, it got me wanting to give D2 another play. After playing it a ton back in the day, I did also play with some mods - cant remember them all now, but I did remember Median

Kinda stupidly, I spent an hour digging around for the Discs only to realise I havent had a DVD drive in several builds....... I was considering getting a copy of the game from *somewhere* <.< (Because I am definitely done paying Blizzard for this game after purchasing it 4.5 times - the .5 is gifting the exp pack to someone). BUT, I might not need to, because to my surprise, I kept a copy of my install from over a decade ago!
So here is where I would like help. The game is a modded version, which still works! I launch it and it says Median 2008 across the background on the menu, and the patch says 1.12. I seem to recall the then-new patch of 1.13 breaking a hi res mod :S I think? What do I need to do in order to get myself to be able to play the current version of Median XL? I believe I do now need patch 1.13, if so, where do I get that. And is there anything else I should know, do you still need a mod to run "hi res"?
Thanks for any help!
*E: Just to add another question - I have a folder called PlugY, I cant really remember what that is, I think it was to do with stash space? Do people still use it/is it needed anymore?