1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your CHSTEK Qualcomm Car Radio Multimedia Player. This advanced system is designed to upgrade your in-car entertainment and navigation experience with a range of modern features.
1.1. Compatibility
- For BMW 3 Series E46 (1998-2007)
- For BMW M3 (1998-2006)
- For BMW 316i, 318i, 320i, 323i, 325i, 328i, 330i
- For Rover 75 (1999-2004)
- For MG ZT (2001-2004)
1.2. Important Notes
- This model does not have a built-in DVD/CD reader and does not support DVD/CD disc functions.
- This model does not have a built-in SD Card Slot. External media can only be connected via USB cable.
- The unit features a 7-inch touch screen with a resolution of 1024*600P.
- If your receiving country is in the Americas (e.g., United States, Canada, Mexico, Brazil), please inform customer service if you require the 4G SIM card network function, as specific versions may be needed for regional compatibility.
- This model includes a two-way interactive CANBUS, enabling display of door information and other vehicle data. It comes with a 12-pin plug. If your car's original radio is 4.3" or 7" with a 12-pin plug, or if the navigation drive is located in the rear, a 6m extension cable is not required for installation.
2. Setup and Installation
The CHSTEK Multimedia Player is designed for seamless integration into your vehicle's dashboard. Professional installation is recommended.
2.1. Before and After Installation Comparison

2.2. Included Accessories
The package includes various cables and components necessary for installation and functionality:

- USB Cable (4-pin)
- USB Cable (6-pin)
- GPS Antenna
- Harness Wire
- Rear View Camera Input / WiFi/Bluetooth Antenna
- Microphone Cable (for 8581/7862/8667 models)
- 4G Antenna (for 8581/7862/8667 models)
- RCA Cable (for 8581/7862/8667 models)
- RCA Cable + MIC Port + 4G SIM Card Slot (for 8581/7862/8667 models)
2.3. Wiring Diagrams
Refer to the following diagrams for proper connection of the ISO wiring harness, CANBUS protocol, and other optional components.

The wiring diagrams illustrate connections for:
- ISO Wiring Harness: Includes connections for GND (Black), B+ (Yellow), ACC (Red), ILL, KEY1, KEY2, ANT, REVERSE, FR (Green/Black), RL (Green/Black), RR (Purple/Black), FL (White/Black), FR (Grey/Black), RL (Green), RR (Purple), FL (White).
- RX TX Canbus Protocol-8P: Includes CAN-RX (External Protocol), CAN-TX (External Protocol), NC, Key-Reset, Aux Out L (Rear Left), Aux Out R (Rear Right), GND, 12V Power.
- Example of Wiring Diagram: Shows connections for ISO Wiring Harness/CANBUS, BT/5V CAN bus port, Radio Antenna Port, GPS Antenna, External Microphone Port, Rear L/R, Front L/R, Subwoofer Output, AUX In, USB-1, USB-2, Rear View Camera Input, WiFi/BT Antenna, 4G SIM Card Slot, Amplifier Control, Power's Input, and more.
3. Operating Instructions
3.1. General Interface and Button Lights
The unit features a user-friendly interface. You can customize the color of the physical buttons to match your vehicle's interior or personal preference.

3.2. Bluetooth 5.0 Connectivity
The unit supports Bluetooth 5.0 for fast and stable wireless connections. This allows for:
- Hands-Free Calling: Make and receive calls without noise while driving.
- Music Streaming: Stream audio from your phone (e.g., Spotify, Pandora) with high fidelity.
- Contact Synchronization: Display incoming/outgoing/missed calls and download/query your phonebook list.

3.3. Wireless CarPlay
CarPlay provides a smarter and safer way to use your iPhone while driving. It mirrors a simplified version of your iPhone screen onto the car radio display, allowing you to:
- Get directions using maps.
- Make and receive calls.
- Send and receive messages.
- Enjoy your favorite music and audiobooks.
- Utilize Siri Voice Control.

3.4. Wired Android Auto
Android Auto mirrors features from your Android device to the car's display. Supported applications include:
- GPS mapping and navigation.
- Music playback.
- SMS messaging.
- Telephone functions.
- Web search.

3.5. WiFi and 4G LTE Connectivity
The unit features built-in WiFi and supports a 4G SIM card slot (check regional compatibility). This allows you to:
- Connect to any network hotspot via WiFi or 4G.
- Use online navigation services.
- Stream online video and music.
- Download applications from the Google Play Store.

3.6. DSP Sound System with EQ Settings
Enhance your audio experience with the integrated Digital Sound Processor (DSP). The DSP allows you to:
- Adjust Equalizer (EQ) settings for smoother treble, richer midrange, and fuller bass.
- Position Adjustment: Adjust the output time of sound from each speaker to create a perfect sound effect, making you feel immersed in the music.
- 3D Surround Sound: By adjusting the speed of sound from the four speakers, all sounds are transmitted to the driver's seat simultaneously.
- Bass Enhancement: Increase the power and flexibility of bass for heavy bass songs.
- Bass Filter: Filter out bass to make middle and high tones more delicate and full.

3.7. Steering Wheel Control
For safer in-car operation, the unit is compatible with most steering wheel control functions. This allows you to easily switch songs, channels, and adjust volume, minimizing distractions and keeping your eyes on the road.

3.8. Radio Function
The radio function supports both automatic and manual station searching. You can drag and drop target stations to customize your channel list.

3.9. Camera Support
The multimedia player supports various camera systems to enhance driving safety:
- Reversing Camera: Automatically switches to the reverse screen with parking lines when backing up.
- Front ADAS DVR + Rear View Dual Recorder: Advanced Driving Assistance System (ADAS) is optional and provides 1080P live display and recording for safer driving.
- 360° Panoramic Camera: (Requires specific hardware option at factory) Utilizes four 220° ultra-wide-angle cameras to capture the vehicle's surroundings, synthesizing a seamless 360° aerial view to eliminate dangerous blind spots.

3.10. TPMS (Tire Pressure Monitoring System)
With the optional OBD2 function, you can retrieve real-time data and trouble codes from your vehicle's computer. This data, including tire pressure, is presented in an easy-to-read format, contributing to safer driving.
3.11. HDMI/AV-Out
The HDMI/AV-Out output port provides a connection method between the unit and an enabled monitor or other device. This allows you to share high-definition and high-quality audio with all passengers in your vehicle.
3.12. Split Screen Function
The split-screen function allows two applications to run and display simultaneously on the screen. Note that some third-party applications may not support this feature if there are functional conflicts.

4. Specifications
The CHSTEK Multimedia Player comes in various configurations to meet different needs. Below is a table outlining the key specifications for each model variant:

| Feature | Specification |
|---|---|
| Brand Name | CHSTEK |
| OEM NO. | FG-7001 |
| Operating System | Android 12 |
| RAM | 8G |
| ROM | 256G |
| Max External Memory | 256G |
| Display Size | 7" |
| Resolution | 1024*600P |
| Is touch screen | Yes |
| Built-in Screen | Yes |
| Built-in DVD Player | No |
| Built-in CD player | No |
| TF/Micro SD Slot | 0 |
| Din | Double Din |
| Voltage | 12 V |
| Radio Chip | ST7708 |
| Amplifier Chip | TDA7851 |
| Bluetooth | Bluetooth 5.0 |
| Network | 4G LTE SIM WIFI Bluetooth Autoradio |
| Digital Media Format | CD, DVD-R/RW, DVD-RAM, VIDEO CD, Mp3, MP4, WMA, JPEG |
| OSD Language | Multi-language (Simplified Chinese, Traditional Chinese, Albanian, Arabic, Azeri, Irish, Estonian, Belarusian, Bulgarian, Icelandic, Polish, Persian, Dutch, Danish, German, Russian, French, Filipino, Finnish, Georgian, Haitian Creole, Korean, Dutch, Galician, Catalan, Czech, Croatian, Latin, Latvian, Lithuanian, Romanian, Maltese, Malay, Macedonian, Norwegian, Portuguese, Japanese, Swedish, Serbian, Slovak, Slovenian, Swahili, Thai, Turkish, Welsh, Ukrainian, Hebrew, Greek, Spanish, Hungarian, Armenian, Italian, Yiddish, Hindi, Urdu India, Indonesian, English, Vietnamese) |
| Certification | CE |
| Origin | Mainland China |
5. Troubleshooting
If you encounter any issues with your multimedia player, please refer to the following general troubleshooting steps:
- No Power: Check all power connections and fuses. Ensure the ACC wire is correctly connected.
- No Sound: Verify speaker connections. Check volume levels and DSP settings. Ensure the amplifier is correctly connected if external.
- Touch Screen Unresponsive: Try restarting the unit. If the issue persists, a factory reset might be necessary (consult support).
- GPS Signal Loss: Ensure the GPS antenna is properly installed and has a clear view of the sky.
- Bluetooth Connection Issues: Ensure Bluetooth is enabled on both the unit and your mobile device. Try unpairing and re-pairing the devices.
- CarPlay/Android Auto Not Connecting: For wired connections, ensure the USB cable is functional and correctly connected. For wireless, check WiFi and Bluetooth connections.
- Poor Radio Reception: Check the radio antenna connection. Ensure the antenna is not damaged.
For complex issues, it is recommended to contact customer support or a professional installer.
6. User Tips
- Regular Updates: Keep your system's software updated to ensure optimal performance and access to the latest features.
- Customize Your Interface: Explore the settings to personalize button colors, themes, and display options for a tailored user experience.
- Optimize Sound: Experiment with the DSP's EQ and position adjustment features to find the perfect audio balance for your vehicle's acoustics.
- Safe Driving: Always prioritize road safety. Use voice commands for navigation and calls whenever possible to minimize distractions.
7. Warranty and Support
7.1. Warranty Information
All CHSTEK multimedia players come with a 12-month Manufacturer Warranty. This warranty covers defects in materials and workmanship under normal use. The warranty will be voided under the following conditions:
- Damage caused by improper installation, accident, misuse, abuse, improper wiring, or incorrect voltage operation.
- Any damages caused by improper packaging when returning the item.
- If the item was disassembled or repaired by unauthorized personnel.
7.2. Support
For technical assistance, warranty claims, or any other inquiries, please contact your seller or refer to the official CHSTEK support channels. It is recommended to seek professional assistance for installation and complex troubleshooting.