: Use the Audi 3-disc firmware update set (often version 5150 or 5570). Inserting CD1 (Part No. 4L0 998 961 for Europe or 4F0 998 961 for US) into the first slot of your CD changer usually triggers the bootloader to install the missing components and restart the system.

This comprehensive guide covers why this error occurs, how to safely obtain the recovery files, and the step-by-step procedure to unbrick your system. Why is Your Audi Stuck on Bootloader v2.40?

Version 240 is widely recognized in the Audi modding community as the most stable baseline bootloader for H43 hardware, allowing a clean bridge to modern firmware configurations. Where to Download Bootloader Version 240 for MMI H43