The keyword primarily refers to the 3.9 update of the HU Engineering Tool (often shortened to Hutool in automotive circles), a specialized software used for BMW head unit (HU) engineering, coding, and retrofitting . This update is significant for automotive enthusiasts and professionals working with NBT and NBTevo units. Overview of Hutool 3.9
: This is considered the most critical addition. It allows users to "wipe" the EEPROM of an NBTevo unit, which is essential when installing a used head unit into a different vehicle or recovering a unit after a failed firmware update. hutool 39 new
: Enabling hidden features like Apple CarPlay, Android Auto, or custom navigation maps. The keyword primarily refers to the 3
The 3.9 update brought several "exclusive" functions designed to simplify complex retrofitting tasks: It allows users to "wipe" the EEPROM of
: Version 3.9 is specifically required for handling BMWs with newer integration levels, such as those from late 2019 onwards (e.g., I-Level 1119).