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).
At least 50% to prevent the phone from dying mid-flash. samsung-j327t-u4-flash-file-firmware
Troubleshoot (like "Binary Check Fail"). Use the CSC_*** file to do a clean
Flashing will erase all user data . Ensure you have backed up your photos and contacts. Flashing Steps samsung-j327t-u4-flash-file-firmware