1. First, download to your PC: Odin3 latest version , Firmware, Samsung Kies and Samsung Drivers.
    Samsung Kies
    Odin3 latest version
    Samsung Drivers
  2. Next turn off your device and then press and hold the Volume down key , Power button and Home key.

    Volume down key

  3. Then press Volume up key and connect your device to PC using USB cable.

    Volume up key

  4. Then open Odin3.

    open Odin3

  5. Next select the order of the files for the firmware: BL , AP ,CP, CSP.

    files firmware

  6. Finally click "Start".

    click Start

  7. That’s all! Within a few minutes, the latest Stock Firmware update will be installed on your phone.