How to make a Korean Summoner Name

Note: This can only be used when making a NEW account.

Navigate to this folder: C:\Riot Games\LeagueofLegends\RADS\projects\lol_air_client \releases\0.0.0.229\deploy

Open up a text file called locale. When you open it, you'll see that it has en_us. Change this part to ko_KR.

Save the file, then right click it, properties, then make it Read Only.

Open up League(it will give you error when it opens the patcher window. Ignore it and press continue)

Everything will be in Korean, but I'm pretty sure you can figure which buttons are which. The first box that shows up asks you to choose your name.

Once you are done with making your name, choosing your avatar, and choosing the skill, level, close the client(you cannot go into any games or the shop).

Go back to C:\Riot Games\LeagueofLegends\RADS\projects\lol_air_client \releases\0.0.0.229\deploy and open up locale and change ko_KR back to en_us. Close the file then uncheck Read Only.

And there you go! You now have a korean username! When you're in game, it will only show as boxes, unless you have the korean language patch. You could also use this method to create japanese and chinese usernames.

Note: To add other people with korean usernames, you may have to use ko_KR to be able to type their name in the Add Friend box.
Note: The \0.0.0.229\ part in the path may change in different patches.
Credits to Ampedzz from reddit.