1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Bonroad 10.25 inch Wireless Carplay Multimedia System. This system is designed to upgrade your BMW's infotainment experience by integrating wireless CarPlay and Android Auto functionalities while retaining your original car's features. Please read this manual thoroughly before installation and use to ensure proper functionality and to avoid any damage.
Figure 1: Bonroad 10.25 inch Multimedia System Interface
2. Important Safety Information
- Always ensure your vehicle is turned off and the battery is disconnected before performing any installation or wiring.
- If you lack experience with car electronics installation, it is highly recommended to seek assistance from a professional installer.
- Do not attempt to operate the multimedia system in a way that distracts you from driving. Always prioritize road safety.
- Ensure all connections are secure to prevent short circuits or malfunctions.
- This product is designed for 12V vehicle electrical systems.
3. Compatibility
This multimedia system is specifically designed for certain BMW models and original system types. Please verify your car's model, year, and original system (CIC or NBT) before installation. This unit is not compatible with EVO systems (ID5/ID6/ID7 menu).
3.1 Applicable Models and Years (Left Hand Drive Cars)
- For BMW X3 F25 X4 F26:
- 2011-2013 models with CIC System (4Pin LVDS Plug)
- 2014-2017 models with NBT System (6Pin LVDS Plug)
- For BMW 3 Series F30 F31 F34 F35:
- 2013-2017 models with Original NBT System
- For BMW 4 Series F32 F33 F36:
- 2013-2017 models with Original NBT System
Important: Some 2017 year cars may have an EVO system (ID5/ID6/ID7 menu), which is NOT compatible with this unit.
Figure 2: System Compatibility Guide (NBT, CIC, EVO)
Figure 3: Distinguishing CIC and NBT Systems by LVDS Plug
4. Package Contents
Please check the package contents upon receipt to ensure all items are present:
- 1 x Bonroad 10.25 inch Multimedia Screen Unit
- 1 x Main Wiring Harness
- 1 x USB Cable
- 1 x AUX Cable
Figure 4: Included Accessories
5. Installation Guide
The Bonroad multimedia system is designed for plug-and-play installation, meaning no wire cutting is typically required. However, professional installation is highly recommended due to the complexity of vehicle electronics.
5.1 Pre-Installation Checks
- Confirm vehicle compatibility (model, year, CIC/NBT system).
- Ensure the vehicle's battery is disconnected.
- Gather necessary tools (e.g., trim removal tools, screwdrivers).
5.2 General Installation Steps (Consult a professional if unsure)
- Carefully remove the original car screen and trim panels to access the head unit.
- Disconnect the original wiring from the head unit.
- Connect the provided main wiring harness to the original car's connectors and to the new multimedia screen unit.
- Special Note for Fiber Optics: If your OEM connector has a green fiber optics cable, you must carefully move it from the original connector to the new connector on the new harness. Refer to Figure 5 for visual guidance.
- Connect the USB and AUX cables as needed.
- Mount the new multimedia screen unit securely in the dashboard.
- Reconnect the vehicle's battery and proceed to initial setup.
Figure 5: Fiber Optics Cable Relocation
6. Initial Setup
After physical installation, follow these steps to configure the system:
- Turn on your vehicle's ignition.
- If the original car screen shows black or "no signal", this is normal.
- Navigate to the system settings on the new multimedia screen:
Settings > System > Factory (code 8866) > Car Setup. - Select the correct original version for your car (CIC or NBT).
- Once the correct version is selected, you can enter the BMW system.
- To enable audio, ensure your BMW system has an AUX input. Switch to the AUX audio source and save the setting. If no sound, ensure the provided AUX cable is plugged into your car's AUX port.
7. Operating Instructions
7.1 Wireless CarPlay (iOS System)
- Connect your iPhone to the multimedia system via Bluetooth.
- On the multimedia screen, click "Wireless Carplay". The system should switch automatically.
- Wait for the connection to establish.
- Alternatively, you can connect via a USB cable for wired CarPlay.
7.2 Wireless Android Auto (Android System)
- Connect your Android phone to the multimedia system via Bluetooth.
- On the multimedia screen, click "Wireless Auto". The system should switch automatically.
- Wait for the connection to establish.
- Alternatively, you can connect via a USB cable for wired Android Auto.
Figure 6: Wireless CarPlay & Android Auto Connection
7.3 Bluetooth Music & Phone Calls
Once your phone is paired via Bluetooth, you can stream music and make/receive phone calls directly through the multimedia system, ensuring safe, hands-free operation.
Figure 7: Bluetooth Music and Phone Call Interface
7.4 Navigation & Maps
Utilize your favorite navigation applications through CarPlay or Android Auto to get directions and focus on driving. The large display provides clear map visuals.
Figure 8: Navigation Display
7.5 Siri Voice Control
With integrated voice control, you can issue commands to play music, get navigation instructions, and make phone calls hands-free, enhancing driving safety.
Figure 9: Siri Voice Control Capabilities
7.6 Airplay & Autolink (Mirror Link)
The system supports Mirror Link functionality, allowing you to mirror your iOS or Android phone screen onto the multimedia display.
Figure 10: Airplay & Autolink Functionality
7.7 Original Menu / Carplay Menu Switching
You can freely switch between the original BMW system menu and the CarPlay/Android Auto menu with a single button press, ensuring seamless integration.
Figure 11: Menu Switching
7.8 Linux Theme Interface
The Linux-based system allows for customization, including switching between different wallpaper themes to personalize your display.
Figure 12: Linux Theme Options
8. Key Features
- Operating System: Linux
- Display: 10.25 inch IPS Touch Screen with 1920*720P Resolution
- Connectivity: Wireless CarPlay, Wireless Android Auto, Bluetooth, WiFi function
- Integration: Supports original iDrive control, steering wheel controls, original car system, sound stereo, and CD radio.
- Voice Control: Siri Voice Control for hands-free operation.
- Mirror Link: Airplay & Autolink for screen mirroring from iOS and Android devices.
- Camera Support: Compatible with factory original reverse camera, parking sensors, and aftermarket reverse/360 cameras.
- Audio: Built-In Speaker/Microphone, 4*45W Out Power.
- Media Formats: Supports Mp3, MP4, WMA, JPEG.
- Multilingual Support: Wide range of OSD languages including English, German, French, Spanish, Italian, and many more.
Figure 13: Original Car Feature Retention
Figure 14: Reverse Camera Support
9. Troubleshooting
- Q: My BMW system doesn't work after installation, or the screen shows "no signal".
- A: This is a common initial state. You need to enter the system settings:
Settings > System > Factory (code 8866) > Car Setup, then select the correct original version for your car (CIC or NBT). - Q: I have an audio problem (no sound).
- A: First, check if your BMW system has an AUX input. If it does, switch to the AUX audio source and save the setting. If there's still no sound, ensure the provided AUX cable is correctly plugged into your car's AUX port.
- Q: The original menu is not displayed normally or is incomplete.
- A: Go to
Settings > Factory setting (8866) > OEM Display Areaand select "Full" to ensure the original menu is displayed correctly. - Q: When I turn on the car lights, the screen switches back to the BMW system.
- A: Navigate to
Setting > Reverse > Turn Light Signal for 360 Degreeand adjust the setting as needed.
10. Technical Specifications
| Feature | Specification |
|---|---|
| Display Size | 10.25 inches |
| Resolution | 1920*720P |
| Operating System | Linux |
| Processor Type | 8368U |
| Out Power | 4*45W |
| Voltage | 12 V |
| Item Weight | 1.7kg |
| Din | Double Din |
| Interface | ISO |
| TF/Micro SD Slot | 0 |
| Built-in DVD Player | No |
| Built-in CD player | No |
| Touch Screen | Yes |
| Built-in Screen | Yes |
| Special Features | Built-In Speaker/Microphone, WiFi function, Support steering wheel control, CarPlay, Android Auto, Reversing Input |
| Digital Media Format | Mp3, MP4, WMA, JPEG |
| Certification | CE, WEEE |
| Origin | Mainland China |
Figure 15: Display Resolution Comparison
11. User Tips
- Double-Check Compatibility: Always confirm your car's exact model, year, and original system (CIC or NBT) before purchasing and installing to avoid incompatibility issues, especially with 2017 models that might have an EVO system.
- Professional Installation: While designed for plug-and-play, the installation process can be intricate. If you are not confident in your technical skills, consider professional installation to prevent damage to your vehicle or the unit.
- Audio Troubleshooting: If you encounter audio problems, the first step is to verify your car's AUX input and ensure it's selected as the audio source. The provided AUX cable is crucial for sound output.
- Initial System Configuration: Remember to enter the factory settings (code 8866) after installation to select your car's original system version (CIC/NBT) for proper functionality.
12. Warranty and Support
12.1 Product Warranty
This Bonroad multimedia system comes with a 1-Year Warranty from the date of purchase. The warranty covers manufacturing defects and malfunctions under normal use. Please retain your proof of purchase for warranty claims.
12.2 Technical Support
For any technical assistance, installation queries, or troubleshooting not covered in this manual, please contact Bonroad customer support. Provide your product model and a detailed description of the issue for efficient service.
