You're right, that's why I asked for a custom recovery.
I wasn't able to contact you, PM is is outbox. Can you contact me with it?
So guys, I managed to rootare this phone, the process is not difficult, but it will void your warranty, you must first make a copy of your stock ROM, depending on what you need to install a recovery and from there to flash a zip file buffer in superuser now have root permissions, if you do not understand something, you can write in youtube channel DjxAndorid, are Italian and are appssionato phones and modding on Android devices, if you can write something cpite channel greetings
ps x admin controls please let the checksum of rom stock, by mistake in loading the files scatter