You will typically get five files: BL , AP , CP , CSC , and HOME_CSC . Enter Download Mode: Power off the phone. Press and hold Volume Down + Home + Power simultaneously.
At least 50% to prevent the phone from dying mid-flash. samsung-j327t-u4-flash-file-firmware
Use the CSC_*** file to do a clean wipe, or HOME_CSC_*** to attempt to keep data (though a clean wipe is recommended for fixing bootloops). You will typically get five files: BL ,