The USB drive is formatted incorrectly (should be FAT32, not NTFS or exFAT), the file is in a subfolder (must be in the root directory of the USB), or the filename has been altered (e.g., Upd05081(1).bin ).
According to technical documentation, this package includes several software versions depending on your car's existing hardware: Upd05081.bin -
Plug the USB into the port under the center armrest (not the glovebox). iDrive Menu: Settings > Software Update > Update Software and follow the prompts. The process usually takes about Common Issues "Software Not Compatible": The USB drive is formatted incorrectly (should be