This file is an official (though now legacy) firmware update released by BMW to improve the compatibility of the iDrive system with newer mobile devices. It typically targets models produced between that use the "NBT" or "CIC" navigation systems. Common Improvements:
Remember: There is no single "universal" upd09051.bin . The file is strictly hardware-dependent. Your success hinges on finding a dump from an identical revision of your device. Capture your own dumps from working units and share them with the community—before these chips fade into digital oblivion. upd09051.bin
(like Carly or BimmerCode), so you might need to re-apply your settings afterward. Bimmerpost How to Install Obtain the UPD09051.bin file. While the Official BMW Software Update Page This file is an official (though now legacy)