How to change new client's language

[manu21]

• close your client.
• Navigate to this folder : "\League of Legends\Config"
• Find the file: "LeagueClientSettings.yaml" (backup up the file if your paranoid)
• Open the file using a text editor like notepad (right click open with)
• look for the line: locale: "en_US" (mine has "en_US but yours may have another language replace with desired language")

─────────────────────────────────────────────────────────────
here are the language codes:
TEnglish, en_US
Português, pt_BR
Türkçe, tr_TR
English, en_GB
Deutsch, de_DE
Español, es_ES
Français, fr_FR
Italiano, it_IT
Čeština, cs_CZ
Ελληνικά, el_GR
Magyar, hu_HU
Polski, pl_PL
Română, ro_RO
РуÑÑкий, ru_RU
Español, es_MX
English, en_AU
日本語, ja_JP
─────────────────────────────────────────────────────────────
Save the file and close it (if u want to prevent patches from resetting the file you can edit the file to 'read only' in properties)
Launch league client voila.