A very specific request!

  1. Turn off your Samsung device completely.
  2. Hold Volume Down + Power + Bixby (or Volume Up) simultaneously to enter Download Mode.
  3. Connect the USB cable to the PC while the phone is in Download Mode.
  4. Open Device Manager on Windows. You should see a device listed under "Ports (COM & LPT)" named Samsung Mobile USB Serial Port.
  5. If you see a yellow exclamation mark, right-click it > Update Driver > Browse my computer > Let me pick from a list > Select the Samsung driver manually.
  • Use Heimdall (macOS/Linux/Windows CLI):

    3. Emergency Recovery (Qualcomm vs. Exynos)

    Final Note:

    The “exclusive” error is rarely a true hardware failure – it’s almost always a software handshake problem. Methodically reinstalling the Samsung USB driver and killing background apps resolves >95% of Exynos 7885 USB driver exclusive issues.

    Official Source:

    You can download the latest version directly from the Samsung Developers website.

    UART debugging

    Developers can use the exclusive driver to enable via USB:

    • On device: Settings → Developer options → Default USB configuration → Switch between MTP, PTP, No data transfer.
    • Use ADB over TCP/IP to avoid USB exclusivity: 
      adb tcpip 5555
adb connect <device_ip>:5555

    If you want, I can: