### [【Software】Audi MHI2Q-CARPLAY-Altscreen Native Second-Screen Navigation Activation Software](https://www.vwodis.com/en/article/14214.html)

**Published:** 2026-10-13T13:35:26

**Author:** admin

**Excerpt:** This software is designed for the Audi MHI2Q platform. …

This software is designed for the Audi MHI2Q platform. It directly renders the native CarPlay AltScreen / second-screen navigation onto the vehicle’s Virtual Cockpit. The core display pipeline has been verified on real vehicles.

The AUG22 firmware for the China (CN) region has undergone real-vehicle testing and works properly.

Some AUG22 firmware variants for Europe (ER) have been reported functional by users in real cars (examples: MHI2Q\_ER\_AUG22\_P5092 / P5152, MU 1329).

Firmware for other ER releases, US and other regions may contain unknown bugs. Full compatibility is not guaranteed. Please assess risks on your own and keep a full backup of your original factory firmware.

![](https://admin.vwodis.com/wp-content/uploads/2026/10/658950849-f582d179-8c8e-41ac-882b-24d623813fca.jpg)

improves second-screen sessions, RGI state recovery, and installation/restore safeguards, and adds manual rescue restore.

### Fixes

-   **Second-screen connection and teardown:** Fix races in overlapping sessions, video capture, and deferred cleanup; isolate old sessions from new ones. Correct generation tracking after failed SETUP and deferred audio teardown filtering so old cleanup does not remove a replacement stream. Improve retry pacing, firewall cleanup, and thread shutdown handling.
-   **RGI and OEM navigation state:** Improve interception recovery after navigation-service replacement, RGI thread/connection recovery, and state restoration on disconnect. Fall back to the compatible path when context 81 is unavailable, and correct Q7 layout handling.
-   **Diagnostics and logging:** Extend audio-link diagnostics; fix mixed cold-start logs, recovery after capture failures, log-size parsing, and several unbounded logs. Installation/restore step output is saved as it arrives, preserving emitted details if an operation is forcibly killed.
-   **Stock-backup protection:** Validate backup completeness and the recorded firmware train. Normal restore keeps binary/configuration content checks and refuses unverified replacements. Fix false rollback-success reports, missing package prechecks, and misleading results after interrupted operations. Rescue snapshots do not replace clean stock backups.
-   **Manual rescue:** Create the empty SD file `MMI-Cockpit-Carplay/RESCUE_RESTORE`. Manual restore can then recover differing or damaged system binaries and configurations from a complete clean backup for the same head-unit model and exact firmware train. Firmware mismatches remain refused; legacy backups without a recorded train cannot rescue. VIN mismatches produce warnings. INSTALL’s automatic uninstall retains strict checks.
-   **Rescue result messages:** Distinguish a missing marker, rescue failure, successful rollback, and incomplete rollback, with specific next steps. Successful rollback restores the pre-rescue state, which may still be damaged; messages explain keeping/replacing the marker and retrying RESTORE after correcting the error. Lock contention is reported separately instead of being mislabeled as a backup/firmware mismatch. VIN warnings are deduplicated in progress output and included in the final RESULT.

### Use and validation

After updating Toolbox, the green-menu entry is `mmi-cockpit-carplay`, with as its internal title. Both `INSTALL NO RGI` and `INSTALL WITH RGI` remain available.

Keep separate computer copies of your own stock backup, SD contents, and logs. Borrow only a clean backup from the **same head-unit model and exact full firmware train**. After `RESCUE SUCCESS`, remove the marker and fully reboot. Both `RESTORE ORIGINAL` and `STORE LOGS + RESTORE` recognize the marker; leaving it present keeps subsequent manual restores in rescue mode. INSTALL never enables rescue automatically.

Local host and simulated head-unit tests passed for installation/restore, backup protection, fault rollback, and result messages. The rescue suite passed 32 cases; the latest message fixes and related regressions passed 74 cases. **The new rescue mode and message fixes still require vehicle validation.** Earlier Fix3 vehicle validation does not establish validation of these new changes.

**Tags:** MHI2Q_en

**Categories:** FAW Audi, Volkswagen, Volkswagen MIB, Volkswagen Modification

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