Grundig Sonoclock 890 Web Firmware Update Allein Belafonte Int Top ((top)) Jun 2026

Navigate to the menu and select Time Setting .

| Method | Availability | Instructions | |--------|--------------|---------------| | | Yes (default) | Device checks for updates daily at 03:00 AM if connected to Wi-Fi. | | Manual USB | Yes | Download update.swu from Grundig support (rarely updated post-2018) to FAT32 USB stick. Insert → Settings → System → Update. | | Web browser | No | Not supported. No HTTP server runs on the device. | Navigate to the menu and select Time Setting