RSNAV is closed from 12nd, Feb, 2026 to 27th, Feb, 2026 for Chinese Holidays. At this period, there is no logistics available.

Due to the global memory shortage following the AI boom, DRAM prices have surged by 200% and NAND prices by 70%. RSNAV is closely monitoring the supply chain and adjusting our production plans accordingly.

As of February 5, 2026, our motherboard stock is severely limited. Please note that while orders placed by January 27, 2026, are secured, all orders received after this date are subject to the following stock availability.

RSNAV S5 Pro/Ultra

AD668H board for B8 8.9, 10.25, 12,3
US version: under 20 pcs
EU version: approx. 100 pcs
AD668HX board for C7, B9, PQ, 8P 10.25" 12.3"
US version: under 25 pcs
EU version: under 58 pcs
9" AD445 Board for C7
US version: under 25 pcs
EU version: under 18 pcs

Important Notice

• Price Adjustments: We are maintaining current pricing for now. However, once this existing stock is exhausted, the cost of the motherboard is expected to rise by at least $100 USD.
• Version Differences: The only difference between US and EU versions is LTE frequency support.

EU: B1, B2, B3, B4, B5, B7, B8, B20, B28, B38, B39, B40, B41

US-NA: B2, B4, B5, B7, B12, B13, B14, B17, B25, B26, B41, B66, B71

• Production Review: We are currently evaluating the long-term sustainability of producing the US LTE frequency version. While no final decision has been made, we are considering the possibility of transitioning toward utilizing EU version boards as our primary standard if component supply constraints persist. We wish to highlight that if this potential change is adopted, it would effectively render LTE connectivity non-functional in the US market due to hardware incompatibility. We will provide a formal update once a conclusion is reached.
• Order Policy: Due to critical stock levels, we reserve the right to cancel orders without prior notice if the specific hardware is no longer available.
• Custom Hardware: As a reminder, all RSNAV S5 Pro/Ultra systems are exclusively customized, manufactured-on-demand hardware available in strictly limited quantities.

The current public beta of the Ultimate version may cause errors when launching the original Audi interface while the 360 3D app is active. To resolve this, please download and unzip the update file, remove the '.1' extension, and install it on your device via a USB drive. After the update, just reboot your device.

Download

Release Date: Feb 10, 2026 | Status: ONLINE

[ Key Enhancements ]

• Application Updates: Updated Z-LINK v6.x, New DSP App (replaces EQ), and CarInfo (includes G-Meter).
• System Optimization: Resolved CAN BUS overloading issues and refined MCU power-up/shutdown logic.
• User Interface: Improved Upper Menu Bar and Steering Wheel '*' Key customization.

Note on DSP APP:
This DSP only works when the sound is going through Audi Auxiliary Input or SPDIF output of RSNAV. If you are using Audi Bluetooth for music streaming, this function is not applicable.
DSP is set to work best when Android Volume Control is disabled in car settings app or Android volume is set to 32 (or about 70%). Audi MMI's AKM ADC chip is not capable of processing high frequency inputs from our TI DAC, thus, there could be echo or THD noise when the output volume is too high.

⚠️ CRITICAL: BEFORE YOU START

This update will wipe your existing factory settings.

• MUST DO: Before proceeding, take clear photos of your current Android Settings, Car Mode Settings, and MCU Settings.
• REASON: The device will operate erroneously if these settings are not manually restored after the update.

🛠 INSTALLATION STEPS

1. Preparation

• This specific update process takes longer than usual. It is normal. Do not interrupt or power off the device until everything is complete.
• Download the update file and extract the contents directly to the root directory of a USB drive (Formatted as FAT32 or exFAT).
• Go to Car Settings > Version Information to initiate the update.

2. Update Sequence (Strict Order Required)
To ensure system integrity, you must perform the updates in the following specific order:

Firstly, SYSTEM Update and then MCU Update
NOTE: Once the MCU update is complete and the system begins to reboot, remove the USB drive.
Do NOT pull it out during the actual update process.

🚨 POST-INSTALLATION FINAL STEPS

1. Factory Default Restore

• After the system starts normally, you MUST perform a 'Factory Default Restore' in the settings menu. New features will not function without this step.
• After the system starts up with the welcome screen, check on 'Do not remind' and skip it. Then let the system idle for 5 minutes. In the background, new apps will be installed. If you operate device before the apps installed, do perfore the factory default restore again.

2. Google Play Protect Prompt

• During the initial setup, a prompt regarding "unverified apps" will appear. You MUST choose "INSTALL ANYWAY".
• If you decline, critical apps (DSP, Z-LINK, 360 Viewer) will not be installed, and you will need to perform another factory restore.

3. Factory Configuration Import (Final Step)

• Re-insert the USB drive into the device.
• When the "Factory Config Import" prompt appears, select Import and allow the system to reboot.
• After rebooting, manually restore your Android, Car Mode, and MCU settings using the photos you took earlier.

Note that this is a public beta and there could be unforeseen glitch or bugs, if you are not comfortable, please do not proceed, but wait for the public release. Meanwhile, your feedback on this software is very important. Please submit your feedback(s) to info@rsnav.com

Download

September 8, 2025

To Our Valued Customers and Community,

We want to provide clarity on our production and shipping timelines. Our products are customized and produced in small batches. This production model means that our orders are fulfilled when the factory has capacity between larger orders from other clients. While this can sometimes lead to delays, it is the nature of our specialized process.

Our CEO is currently working on a limited schedule to manage transactions and escalated cases while recovering from a serious health condition he experienced this spring. We are pleased to report that he is making a good recovery, and his reduced workload is a necessary part of managing his health and stress levels.

We appreciate your understanding and continued support, especially during a time of global economic uncertainty and tariff-related challenges. We remain committed to providing you with high-quality products and service.

Sincerely,

The RSNAV Team

Please click here to watch the YouTube Shorts Video comparing sound quality and voice call quality of both brands.

Seen an eye catching 3D Dashboard Interface from AliExpress advertisement? Check out the reality.

Standard system introduction
https://youtu.be/OdcSZwbmYvk

RSNAV Standard system installation video on Audi B8/B8.5 Q5/SQ5 https://youtu.be/coXZjcvipTw

RSNAV Standard system post installation setup instructions
https://youtu.be/6wO_D8Lxuxw

RSNAV.com reserves the right to suspend a device's functionality if full payment is not successfully received. This includes instances where a payment is canceled or declined after the product has shipped, such as a customer initiating a chargeback.

Upon cancellation of a device's registration due to non-payment, the following will occur:

• Android Devices: An "inactivation warning" will appear on the screen of the affected device every 5 minutes.
• Standalone Devices: The device's functionality will become limited until full payment is received and verified.

RSNAV.com will not reactivate any device that has not been fully paid for. There is no method to retain a fully functional RSNAV device without proper and complete payment. We will vigorously pursue all attempts to defraud RSNAV.com.

By purchasing from RSNAV.com, you agree to these terms and conditions. If you do not agree with or understand these terms, do not proceed with a purchase.

Last Revised: November 6, 2022