Do not skip these steps—they are essential to avoid permanent damage.
: A loss of battery power or ejecting a disc while updating the MMI firmware.
Don't panic—you haven't "bricked" your car, but you are stuck in a loop that requires specific firmware files to exit. Here is how to resolve the issue and get your Multi Media Interface (MMI) back to normal. Why This Screen Appears This screen is a fail-safe mode for the Audi MMI 2G High
: Once the correct disc is inserted, the bootloader should automatically begin the "Standard" update process to reinstall the missing application files. bootloader version 240 mmi h43 download new
for your exact model and region (e.g., RETUS , RETEU , RETEU ) that contains bootloader version 240.
: Once the progress bar finishes, scroll to the bottom and select "Restart MMI"
Should now report 240 or a higher build containing 240. Do not skip these steps—they are essential to
Ultimate Guide to MMI H43 Bootloader Version 240: Updates and Installation
: Download files formatted as .iso , .nrg , or .cue/.bin files. Do not drag and drop files onto the disc. Use imaging software like ImgBurn or Nero to "Burn Disc Image".
If your system is bricked or stuck in a boot loop, you must force the H43 hardware into an emergency read state: Here is how to resolve the issue and
The message "BOOTLOADER Version 2.40 MMI (H43) Application Update Search for download CD" typically indicates that your Audi MMI 2G system is stuck in a bootloader loop
You usually don't see this screen for no reason. In virtually all documented cases, this bootloader screen is triggered by user error or an unsuccessful software update. Based on thousands of forum posts and technical reports, the most common causes include:
If your MMI is currently working but needs the bootloader to proceed with a map update, use the standard engineering menu. If your MMI is currently blank or stuck on a red/green screen, skip to the Emergency section. Method A: Standard Engineering Menu Installation
If your MMI screen is stuck displaying "Bootloader version 2.40 MMI (H43) application update search download CD," the system is waiting for valid software to be loaded via the CD changer.