Download this files (necessary files)
How can you do?
I-Please start "Usb Debugging" on your device.
II-Install usb drivers and insert usb cable to device.
III-Install Adb & Fastboot
IV-Run Windows command line (CMD)
V-Check your device
VII-Select "Install Zip From Sideload" on your device.
VIII-Extract sm-g350e root.rar and Install UPDATE-Kinguser-3.4.0.zip with sideload.
command: adb sideload "That the file location"
If not work:install cwm manually after install with sdcard (Click Here to Download Cwm Recovery[Attention!CWM recovery unstable but working!]) Download recovery from mirror