upd09051.bin is a official BMW software update package designed for vehicle infotainment systems, specifically targeting Multimedia and Telephone (Bluetooth)
Compress .bin files for faster downloads, especially in low-connectivity regions. upd09051.bin
Here is what is known about this file and its typical origins: upd09051
Open the file in a hex editor (like HxD). Look at the first 16 bytes. For a clock/vacuum fluorescent display (VFD) driver, you should see a pattern of: upd09051.bin
The file was scanned for potential security risks.