1. What's in the Box
The package you receive will include the following components:
- 1x Radio device
- 1x Plug and play cable
- 1x Gift reverse camera (Note: Not included with 8141 models)
- 1x Gift external microphone (Note: Not included with 8141 models)

2. Vehicle Compatibility & Important Notes
2.1. Compatible Porsche Models
This multimedia navigation system is compatible with the following Porsche models:
- Porsche Cayman Boxster 718 911 918 981 997 (2012-2018)
- Porsche 911 991 (2011-2019)
- Porsche 911 GT2 GT3 (2013-2019)
- Porsche 911 Turbo (2014-2019)
- Porsche 911 Targa (2014-2019)
- Porsche 911 Carrera (2012-2018)
- Porsche Cayman 981C (2013-2018)
- Porsche Boxster 981 (2012-2017)
- Porsche Boxster 982 718 (2016-2020)
Please verify your car's dashboard matches the product images to ensure compatibility. If unsure, contact support with your car's detailed information.
2.2. Amplifier Compatibility (Bose/Fiber Optic)
- If your original car has a BOSE sound system or a fiber optic amplifier, a separate fiber optic box is required for sound functionality. Please ensure you order the option that includes this box and specify your car's amplifier type (e.g., PCM 3.1 or PCM 4.0).
- Our product is suitable for cars with a PCM3.1 Burmester amplifier.
- Our product is NOT suitable for cars with a PCM4.0 Burmester amplifier.


2.3. General 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 used via USB cable.
- 4G Network Functionality: The 4G network function is not supported in the Americas (e.g., United States, Canada, Mexico, Brazil) and in Japan and South Korea due to different carriers and network basebands. Buyers in these regions should be aware of this limitation.
- SD Card Slot Reset Hole: The SD card slot includes a flexible reset hole that can be opened and pressed back in. This is a normal design feature and not a defect.

3. Setup & Installation
Professional installation is recommended for this product. Ensure all connections are secure before powering on the device.
3.1. Wiring Diagram
Refer to the detailed wiring diagrams provided below for proper connection of the multimedia system to your vehicle's electrical system and peripherals. Different configurations may have slightly varied wiring. Ensure all connections are made correctly to avoid damage.

3.2. Before and After Installation
Observe the visual transformation of your car's interior with the new multimedia system installed.

4. Operating Instructions
4.1. User Interface (UI) Navigation
The system features various user interfaces depending on the specific model (e.g., FY818, FY8581, FY7862, MT8667, QCM6125, UIS7870A). Navigate through the menus by swiping and tapping on the touchscreen. The main screen typically displays common functions like navigation, music, and radio.






4.2. Panel Light Color Adjustment
Customize the color of the panel lights to match your vehicle's interior or your personal preference. Access this setting through the system's 'Settings' menu, typically under 'Car' or 'Display' options.

4.3. Bluetooth 5.0 Connectivity
The system features Bluetooth 5.0 for fast, wide-ranging, and interference-resistant wireless connections. You can stream music from your phone (e.g., Spotify, Pandora) with high fidelity and make hands-free calls. The system supports displaying incoming/outgoing/missed calls, downloading phonebook lists, and Bluetooth Music SYNC. Both built-in and external microphones are supported for clear communication.

4.4. Wireless CarPlay & Wired Android Auto
Seamlessly integrate your smartphone with the car's display for a smarter and safer driving experience.
- Wireless CarPlay: Use your iPhone to get directions, make calls, send/receive messages, and enjoy music directly on the car's screen.
- Wired Android Auto: Mirror features from your Android device, including GPS mapping/navigation, music playback, SMS, telephone, and web search.



4.5. Radio Function
The radio supports automatic and manual station search. You can easily drag and drop station icons to customize your channel list. It also features RDS (Radio Data System) for European users, automatically selecting stable frequencies.

4.6. Split Screen Function
The split screen feature allows two functions to operate and display simultaneously. For example, you can view navigation while playing a video or music. Note that some third-party applications may not fully support split screen functionality if there are conflicts.

4.7. Steering Wheel Control
For safer in-car operation, the system is compatible with most steering wheel control functions. Easily switch songs, channels, and adjust volume to minimize distractions and keep your eyes on the road.

5. Features & Specifications
5.1. Core System Specifications
The system is powered by a powerful Octa-core processor, ensuring a smooth and responsive user experience. Performance is increased by 45% compared to other systems.

| Parameter | FY818 | FY8581 | FY7862 | MTK8667 | Qualcomm 6125 | FY7870 |
|---|---|---|---|---|---|---|
| Version | UIS8141E 4Core 32Bit | UIS8581A 8Core 64Bit | UIS7862A 8Core 64Bit | MTK8667 | Snapdragon 665 8Core 64Bit | UIS7870 8Core 64Bit |
| CPU | 4x Cortex-A7 1.3GHz | 8x Cortex-A55 1.6GHz | 2x Cortex-A75 1.8GHz + 6x Cortex-A55 1.8GHz | 6x Cortex-A55 1.7GHz | 2x Cortex-A73 2.0GHz + 6x Cortex-A53 1.8GHz | 2x Cortex-A75 2.3GHz + 4x Cortex-A55 2.1GHz |
| RAM & ROM | 1+32G | 2+32G, 4+64G, 8+128G | 3+32G, 4+64G, 6+128G, 8+128G, 8+256G | 8+128G | 4+64G, 6+128G, 8+256G | 6+128G, 8+256G, 12+256G |
| Radio IC | QN8035(FM) | TDA7708 (AM/FM Band RDS) | ||||
| Amplifier | PT2313 | ROHM32107 4x50W | TDA7851 4x50W | TCB503 4x50W | ||
| DSP | 15 Band EQ | 36 Band EQ | 16 Band EQ | 30 Band EQ | 15 Band EQ | 18 Band EQ |
| Carplay Android Auto | Built-in Wireless CarPlay/Android Auto | |||||
| Resolution | 9" 1024x600P | 7" 1024x600P | ≤7" 800x480P, 8.4" 1024x768P | 8"/9" 1280x720P, 8.8"/10.25" 1280x480P | ||
| Internet | WiFi | 4G SIM+WiFi | ||||
| Navigation | GPS+GLONASS | |||||
| Camera | Support Backup Camera/AHD 1080P Input/Front Parking Camera/ADAS DVR Camera | |||||
| Basic Features | Radio | Navigation | Bluetooth Handsfree | Media Player | Split Screen | DSP | Google Play Store. | |||||

5.2. Audio Processing (DSP)
The integrated DSP (Digital Sound Processor) allows for advanced audio customization:
- EQ Settings: Adjust the equalizer to achieve smoother treble, richer midrange, and fuller bass.
- Position Adjustment: Fine-tune the sound output time to each speaker for a perfect sound effect, creating an excellent driving position sound.
- 3D Surround Sound: Without physically changing speaker positions, the system adjusts sound speed from each of the four speakers to deliver all sounds to the driver's seat simultaneously, creating an immersive music experience.
- Bass Enhancement: Activate this feature for a more powerful and flexible bass response, especially with heavy bass tracks.
- Bass Filter: Directly filter out bass frequencies to make middle and high tones more delicate and full.

5.3. Connectivity
- Built-in WiFi Modem / 4G LTE SIM Card Slot: Connect to any network hotspot via WiFi or 4G (where supported) for online navigation, video, music, and app downloads from the Google Play Store.
- HDMI / AV-Out: The HDMI/AV-Out port provides a connection method to an enabled monitor or other device, allowing you to share high-definition audio and video with all passengers.

5.4. Camera Support
- Backup Camera: Automatically switches to the reverse screen with parking lines when reversing, enhancing safety.
- Front ADAS DVR + Rear View Dual Recorder: Optional Advanced Driving Assistance System (ADAS) provides 1080P live display and recording, contributing to safer driving.
- 360° Panorama Function: Super-3D 360° Panoramic All-in-one Car Multimedia Player. Utilizes 4x220° ultra-wide-angle cameras to capture the vehicle's surroundings, synthesizing a seamless 360° aerial view to eliminate dangerous blind spots. Note: The 360 panorama function requires dedicated hardware support from the factory. If you do not purchase the 360 chip hardware option, your screen will not support this function.

5.5. Tire Pressure Monitoring System (TPMS)
With the optional OBD2 function, you can retrieve real-time data and trouble codes from your vehicle's computer. This data is presented in an easy-to-read format, allowing you to monitor tire pressure and other vehicle diagnostics.
5.6. Product Dimensions

6. Troubleshooting
- No Sound / Amplifier Issues: If your original car has a BOSE sound system or a fiber optic amplifier, ensure you have installed the correct fiber optic box. The system is compatible with PCM3.1 Burmester but not PCM4.0 Burmester.
- 4G Network Not Working: Verify your region's 4G compatibility. The 4G network function is not supported in the Americas (United States, Canada, Mexico, Brazil) and in Japan and South Korea.
- SD Card Slot Appears Damaged: The SD card slot has a flexible reset hole. This is a normal design feature and not a defect.
- Split Screen Conflicts: If a third-party app does not work correctly in split screen mode, it may not support this feature. Try using the app in full-screen mode.
- Installation Issues: It is highly recommended to have the product installed by a professional. If issues arise during installation, contact support.
7. User Tips
- Customize Your UI: Explore the various UI themes and panel light colors available in the settings to personalize your driving experience.
- Optimize Sound: Utilize the DSP's EQ and position adjustment features to tailor the audio output to your preference, enhancing clarity and bass.
- Stay Connected: Leverage the built-in WiFi or 4G (where available) to access online maps, streaming music, and other apps for an enriched journey.
- Safety First: Always use the steering wheel controls for basic functions to minimize distractions while driving.
8. Warranty & Support
8.1. Warranty Information
All CHSTEK multimedia systems come with a 12-month manufacturer warranty. This warranty covers defects in materials and workmanship under normal use. The warranty does not cover damage resulting from improper installation, accidents, misuse, abuse, improper wiring, or incorrect voltage operation.
8.2. Technical Support
For any technical assistance or inquiries regarding your product, please contact CHSTEK customer support. Provide your product model and any relevant details to help us assist you efficiently.