hi, i am new with this, i need to install castellano language in a MI 4LTE with MIUI 7.5.6.0, i dont know what ROM must I download and how to install, may you help me?
You ment to say spanish language. Castellano does not exist in english and no one will undestand it.
All eu Roms are multilanguage, you can also install the latest global. Here is the link and how to flash it.