To flash firmware using Odin (Samsung's proprietary flashing tool), the phone must be in "Download Mode" (Volume Down + Home + Power). The Exynos 7885 USB driver is required for Odin to populate the COM ports. Without the correct driver, Odin will not see the device.
Double-click on the Samsung_Android_USB_Driver.exe file. Exynos 7885 Usb Driver
PHYs:
: Windows 11, 10, 8.1, 8, and 7 (both 32-bit and 64-bit). To flash firmware using Odin (Samsung's proprietary flashing