If you want to map out your next upgrade steps, let me know: Your current (e.g., 2017 Audi A4).
Look for a line resembling MHS2_ER_AU_P1240 or similar. If it matches, your platform is operating on the 1240 production framework. Unlocking Navigation Maps & Features via Software Updates
I can give you a tailored compatibility layout for your exact car dashboard! Share public link
This unit is designed to serve as the heart of a multi-room climate system. Whether you are an installer looking for technical specs or a homeowner researching your next upgrade, here is why the P1240 deserves your attention.
A battery stabilizer or battery tender connected to your vehicle (firmware corruption will occur if the car loses power mid-update). mhs2-er-au-p1240
(MU 0213)
[System Check] ──> [Format SD Card] ──> [Copy Update Files] ──> [Launch Red Menu] ──> [Execute Flash] 1. Verify Current System Version
If you see MHS2_ER_AU_P1240 , your system is compatible with the updates described below.
: Enabling the Audi Smartphone Interface (CarPlay/Android Auto) and unlocking factory navigation. Performance If you want to map out your next
If you are planning to update or modify your firmware using resources like M.I.B._More-Incredible-Bash or third-party activators, be aware that updating the firmware can sometimes disable premium sound systems like or Bang & Olufsen if the amplifier is not properly bypassed during the update.
The most commonly reported issue with MHS2_ER_AU_P1240 is that even when music streaming over Bluetooth works fine. One owner described exactly this:
Bluetooth pairing sync failures with modern iOS and Android smartphones.
Press and hold down the toggle switch upward while simultaneously pushing the MEDIA toggle switch downward. Unlocking Navigation Maps & Features via Software Updates
I'll start by defining MHS2 as part of Audi's MMI system, citing source 4 for the year range. Then, I'll specify that the "P1240" label indicates a factory-installed firmware version, citing source 15. Next, I'll explain how to identify the system using the Red Engineering Menu, citing sources 6, 7, and 19. Then, I'll detail the update process: require two SD cards, one for firmware and one for maps, and mention the file size and activator, citing sources 6 and 16. After that, I'll cover the activation of features like CarPlay and Android Auto, noting the need for a USB data port, citing sources 7 and 19. Finally, I'll discuss the improvements from updates, citing sources 6 and 19. I'll conclude with key takeaways and important warnings. article serves as a comprehensive guide to understanding the infotainment software version MHS2_ER_AU_P1240 in your Audi vehicle. It will explain what it is, how to update it, and how to unlock new features, ensuring you get the best performance from your car's technology.
: Represents the specific software release tier. The "P" indicates that this version was installed as a Production release directly at the factory or by an authorized dealership. The number 1240 represents the version sequence. Supported Vehicle Models and Hardware
Some users trying to update their MHS2_ER_AU_P1240 to newer versions (like P1242) report issues accessing the green engineering menu. If you are experiencing this, it may require specific coding via VCDS or OBDeleven to enable access to the hidden menu [Audinside].