1. Product Overview
The XTRONS 10.25-inch Android 14 Car Multimedia System is designed to upgrade your BMW's in-car entertainment and navigation experience. It features an Octa-core processor, 4GB RAM, 64GB ROM, and a high-resolution IPS display, offering seamless integration with your vehicle's original NBT system.

Key Features:
- 10.25-inch IPS G+G Touch Screen with 1920x720 Resolution
- Android 14 Operating System with Multiple UI Themes
- Octa-core Processor (8x Cortex A55)
- 4GB RAM and 64GB ROM
- Built-in Wireless CarPlay and Wireless/Wired Android Auto
- Built-in 4G LTE Module (Supports carriers in Asia and Europe)
- Dual Band Wi-Fi (2.4G & 5G) and Bluetooth 5.0
- Built-in GPS and GLONASS Navigation
- Supports Steering Wheel Control and Original Car Information Display
- Screen Mirroring Functionality
2. Compatibility and Pre-Installation Check
2.1 Applicable Models
This unit is specifically designed for the following BMW models with the NBT system:
- BMW 3 Series F30/F31/F34/F35 (2013-2016)
- BMW 4 Series F32/F33/F36 (2013-2016)
- BMW M3 F80/F81 (2014-2016)
- BMW M4 F82/F83 (2014-2016)

2.2 System Identification (NBT, CCC, or CIC)
It is crucial to verify that your vehicle has the NBT system before installation. This unit ONLY works with the NBT system. Refer to the image below for identification:

- NBT System (Compatible):
- Identical features: A 6-pin LVDS port at the rear of the unit.
- A "MEDIA" button on the iDrive controller or a Touch pad controller.
- A BMW ConnectedDrive function.
- CCC System (Incompatible):
- Identical features: Independent slots for CD and DVD.
- A 10-pin LVDS port at the rear of the unit.
- A BMW Car Communication Computer Interface.
- CIC System (Incompatible):
- Identical features: A 4-pin LVDS port at the rear of the unit.
- A "CD" button on the iDrive controller.
- A BMW Car Information Computer Interface.
NOTE: A "Car ConnectedDrive" or "Car Information Computer" interface does not guarantee you have the NBT system. Always check the LVDS port and iDrive controller buttons.
3. Setup and Installation
3.1 Package Contents
Before beginning installation, ensure all components are present:

- XTRONS 10.25'' Android 14 Car Multimedia Unit
- ISO Wiring Harness
- USB Cable
- GPS Antenna
- 4G Antenna
- Mini Speaker
- Tweezers
- Installation Instruction Manual (separate document)
- User Manual (this document)
3.2 Installation Procedure
Warning: To prevent the risk of fire or damage caused by overcurrent to the factory unit, always ground the screen before installation. Installation should be carried out by a trained car mechanic or professional.
The installation involves disassembling parts of your car's dashboard and connecting the new multimedia unit. A general illustration of the process is provided below. Refer to the dedicated "Installation Instruction Manual" for detailed, step-by-step guidance.

- Remove the trim panel (1) using appropriate tools.
- Remove the lower panel (2).
- Remove the side panel (3).
- Unscrew and remove the original head unit/display (4).
- Install the new XTRONS unit (5) and connect the LVDS cable, power cable, and radio antenna.
- Secure the unit and reassemble the dashboard components.
3.3 Wiring Harness Connections
Carefully connect the provided wiring harness components as illustrated below. Ensure all connections are secure to avoid malfunctions.

- ISO Wiring Harness 1
- ISO Wiring Harness 2
- Audio Output
- AUX OUT (Connect to original AUX)
- Reserved port for protocol
- ACC (Accessory power)
- BACK (Reversing Check)
- CCD 12V (Camera Power Cable)
- CAM IN (Camera Input)
- MIC (Microphone Port)
- Mini Speaker
- USB1 (USB Port 1)
- USB2 (Carplay, USB Port 2)
- 4G Antenna
- GPS Antenna
- LVDS Port
Note: The 4G LTE module requires a data Micro-SIM card (not included) to function.
4. Operating Instructions
4.1 Basic Functions
The XTRONS unit runs on Android 14, providing a familiar smartphone-like interface. You can navigate through apps, settings, music, and video players using the touch screen or the original iDrive controller.

- Navigation: Utilize built-in GPS and GLONASS with various map applications.
- Multimedia: Play MP3, MP4, WMA, JPEG files.
- Bluetooth: Connect your smartphone for hands-free calling and audio streaming.
- Wi-Fi: Connect to Wi-Fi hotspots for internet access and app downloads.
- 4G LTE: Insert a Micro-SIM card for independent 4G network access.
4.2 Smart Connectivity (CarPlay & Android Auto)
Enjoy seamless integration with your smartphone for navigation, music, messages, and more.

- Wireless CarPlay: Connect your iPhone wirelessly for a streamlined in-car experience.
- Wireless/Wired Android Auto: Connect your Android phone wirelessly or via USB for Android Auto features.
4.3 Screen Mirroring
Cast content from your smartphone to the XTRONS display for an immersive entertainment experience.

4.4 Retaining Original Car Functions
The unit is designed to integrate seamlessly with your BMW's existing systems, retaining key functionalities:

- iDrive System: Retains full iDrive system control for easy access to functions and navigation.
- Amplifier System: Retains the original fiber optic sound system.
- Original Car Information Display: Supports display of original car info like speed, fuel level, and safety warnings.
- Original Radio, CD, Bluetooth: Continues to support these original functions.
- Backup Camera Display: If your car has an original backup camera, its display will be supported.
- Steering Wheel Control: Original steering wheel controls remain functional.

5. Maintenance
To ensure the longevity and optimal performance of your XTRONS multimedia system, follow these general maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the screen and exterior. Avoid abrasive cleaners or solvents.
- Software Updates: Periodically check for and install software updates provided by XTRONS to ensure the best performance and access to new features.
- Environmental Conditions: Avoid exposing the unit to extreme temperatures or direct sunlight for prolonged periods. The unit is designed to operate within a temperature range of -20°C to +80°C.
- Connections: Ensure all cables and connections remain secure. Loose connections can lead to intermittent issues.
6. Troubleshooting
If you encounter any issues with your XTRONS multimedia system, refer to the following common troubleshooting steps:
- No Power/Unit Not Turning On:
- Check all power connections, especially the ISO wiring harness and ACC wire.
- Ensure the car's ignition is on.
- Verify the car's fuse for the multimedia system.
- No Sound:
- Check speaker connections.
- Ensure the volume is not muted or set too low.
- Verify the original amplifier system is functioning correctly.
- Check AUX OUT connection to original AUX.
- Display Issues (Blank Screen, Flickering):
- Check the LVDS cable connection.
- Ensure the unit is properly grounded.
- Restart the unit by turning off and on the car's ignition.
- GPS Not Working:
- Ensure the GPS antenna is properly connected and placed in a location with clear sky view.
- Check GPS settings within the Android system.
- Bluetooth/Wi-Fi Connectivity Problems:
- Ensure Bluetooth/Wi-Fi is enabled in the unit's settings.
- Restart the unit and your mobile device.
- Check for interference from other devices.
- CarPlay/Android Auto Not Connecting:
- For wired connections, try a different USB cable.
- For wireless connections, ensure Bluetooth and Wi-Fi are enabled on both the unit and your phone.
- Ensure your phone's operating system is up to date.
If problems persist after attempting these steps, please contact XTRONS customer support for further assistance.
7. Specifications
Model: QDB10NBTH

| Feature | Description |
|---|---|
| Power Supply | DC 9.4V-15.8V |
| Max Working Current | 15A |
| Gross Weight | 2.10kg |
| Net Weight | 1.10kg |
| Auto-memory Function | Yes |
| Applicable Models & Years | For BMW 3 Series F30 F31 F34 F35 (2013-2016) with NBT System For BMW 4 Series F32 F33 F36 (2013-2016) with NBT System For BMW M3 F80 F81 (2014-2016) with NBT System For BMW M4 F82 F83 (2014-2016) with NBT System |
| Face Panel Size | 274mm x 264mm |
| Chipset | CortexTM A55 |
| CPU | 8-core CPU |
| Processor Architecture | 64-bit |
| Memory | LPDDR4 |
| RAM | 4GB |
| Storage | UFS2.2 |
| ROM | 64GB |
| Cellular | Support Carriers in Asia and European TDD-LTE (Bands 34, 38, 39, 40, 41) FDD-LTE (Bands 1, 3, 5, 8) WCDMA (Bands 1, 8) |
| Wi-Fi | 2.4G a/g/n, 5G a/g/n/ac |
| Bluetooth | Bluetooth 5.0 |
| CarPlay | Wireless connection |
| Android Auto | Wireless and wired connection |
| Screen Mirroring | Wireless connection (can NOT work simultaneously with CarPlay or Android Auto) |
| Display | 10.25-inch G+G capacitive touch screen IPS technology 1920 x 720 pixel Display Ratio: 8:3 |
| Original Car Function Support | Support Original Car information Display Support Original iDrive Support Original CD Player Support Original Radio Support Original Bluetooth Support Original Steering Wheel control Support Original Parking Radar Support Original Hand Drive Support Original Camera |
| Satellite System | Support GPS, GLONASS |
| Video Playback | Video Codecs: H.264(AVC), H.265(HEVC) Video encoder: 1080P@60fps |
| Audio Playback | Support formats includes MP3, WMA, WAV, AC3, OGG and FLAC |
| Picture Format | Support formats includes JPEG, BMP, PNG and TIFF |
| Input and Output Ports | 2 USB Type-A 1 Microphone input |
| Microphone (NOT Included) | Support MIC001, MIC002 and MIC003 (NOT Included) |
| DAB (NOT Included) | Support USDAB01, USDAB02, USDAB04 and ACUSDAB05T |
| DVR (NOT Included) | Support DVR025, DVR027S, DVR028S, DVR030S and ACWIFIDVR02 |
| TPMS (NOT Included) | Support TPMS07 and TPMS08 |
| OBD (NOT Included) | Support OBD04 |
| Reversing Camera (NOT Included) | Support CAM1080, CAM005, CAM009S, CAM018 and ACCAM10802 |
*Android is a trademark of Google LLC.
8. Warranty and Support
The XTRONS 10.25'' Android 14 Car Multimedia System comes with a 1-year warranty from the date of purchase, covering manufacturing defects and malfunctions under normal use.
Customer Support:
For technical assistance, warranty claims, or any questions regarding your product, please contact XTRONS Official Store customer service. Ensure you have your product model number (QDB10NBTH) and purchase details ready when contacting support.
XTRONS is committed to providing high-quality products and outstanding customer service, ensuring that products meet and exceed industry-specific regulations or standards from manufacturing to distribution.

9. User Tips
- Verify NBT System: As highlighted in the compatibility section, double-check your BMW's system (NBT, CCC, or CIC) before installation to ensure proper fit and function. This is a common point of confusion.
- Professional Installation: While a general installation guide is provided, professional installation by a trained car mechanic is highly recommended to avoid damage and ensure correct wiring.
- 4G SIM Card: Remember that a data Micro-SIM card is required for the 4G LTE functionality and is not included with the unit.
- Screen Mirroring vs. CarPlay/Android Auto: Note that screen mirroring cannot work simultaneously with CarPlay or Android Auto. Choose the function that best suits your current needs.





