Since Samsung uses Exynos chipsets in many of its global devices, a phone connected via USB might be misidentified as a generic "Exynos device" if the official Samsung Mobile USB Drivers are missing or corrupted.
If the device is booting into Android, verify that USB mode is set to "Transferring files" or "File Transfer" via the notification shade, as mentioned in Samsung Support . If you can tell me: The exact model number of the Samsung device? exynos usb device4000 verified
Reflash the "Home_CSC" file to repair the system without losing data. ⚠️ Important Warning Since Samsung uses Exynos chipsets in many of
Ensure your aren't physically stuck or jammed by a tight phone case. exynos usb device4000 verified