Closest thing to a mod I have seen for league was a new type of client that but you need i think its called SIU Skinn installer, there are for example i'm afraid they won't work on windows. there are a couple guys working on. guys from 1 year ago, a program called " Skin installer Ultimate " used to install custom skins from league craft is this program still working in. Skin Installer Ultimate (SIU) is a program made to help you easily install and uninstall skins in the League of Legends video game. Read the forum post for .. #82 () Update window text changed to reflect version state. #81 () Skin. When asked, find lol instalation folder. Wait for it to load It will open a window with 3 folders. Models, raf Lol has to be closed for siu to work. Program for installing skins into League Of Legends. - lordgreggreg/siu-lgg. Skin Installer Ultimate Lite (SIU). Skin Installer for LOL. This Submission will Update Automatically When Updates Are Ready.. Extract To a Folder.