Download and install the official Samsung Android USB Driver package so your PC recognizes the device in Download Mode.
Flashing stock firmware via the CSC file will factory reset your device and wipe all local storage. gsmromnet odin full
Flashing firmware carries inherent risks. To ensure a 100% success rate when using Gsmromnet Odin Full, complete this checklist: Download and install the official Samsung Android USB
Click on the respective buttons in Odin and select the extracted firmware files: gsmromnet odin full