My Redmi 2 was HardBricked, but I've followed this tutorial and I fix it: http://forum.miuirom.com.br/index.php?threads/recupera%C3%A7%C3%A3o-de-telefone-com-hard-brick.219/ (the language is Brazilian Portuguese)
Everything worked ok, but no SD Card can be recognized anymore. Does anyone know how to fix it?