Samsung Galaxy Ace NXT SM G313H Root by Z3X
1- Open Z3X.
2- Choose Supported Files tab.
3- Check Samsung File–> Firmware.
4- Select Model no. & copy root file.
5- Assign the path of Root file as PDA.
6- Click on Flash.
7- Switch off the mobile & press Volume down + Home + menu key to enter download mode.
8- Then, connect mobile to Box.