Look for "SM-J327A U5 Firmware" (Ensure it is U5/5).
Connect the phone to the computer via USB. Odin will show a blue sign in the ID:COM port. Load Files: Click on BL and select the BL file. Click on AP and select the AP file. Click on CP and select the CP file. samsung-j327a-u5-flash-file-firmware
Download the latest version of Odin (v3.10.7 or newer recommended). Look for "SM-J327A U5 Firmware" (Ensure it is U5/5)
What are you trying to fix (bootloop, FRP lock, software update)? What error message are you seeing in Odin (if any)? I can help troubleshoot the flashing process. samsung-j327a-u5-flash-file-firmware
Click on and select the CSC file (Use CSC_*** if you want to clean wipe, or HOME_CSC_*** if you want to keep data).