BMW makes this easy through the official website.
BMW utilizes two primary methods for software distribution. Understanding the difference is crucial before attempting a USB download. bmw software update top download usb
For vehicles manufactured from roughly 2018 onwards (G-series chassis and later), BMW utilizes the Remote Software Upgrade. BMW makes this easy through the official website
Determine the chassis code (e.g., F30, G20) and the iDrive version (e.g., NBT, NBT EVO, ID6, ID7, ID8). This dictates which software version is compatible. With the engine running (to prevent the car
With the engine running (to prevent the car from entering battery saver mode), insert the USB drive. Navigate to the iDrive menu: Vehicle Apps > System Settings > Software Update > USB Update. The system will scan the drive, verify the signature, and prompt you to start. A full navigation map update can take 30 to 90 minutes, but the car remains drivable during the process. A firmware update, however, will disable the vehicle for 10-15 minutes—do not turn off the ignition.
With your USB drive ready, head to the driver’s seat. Ensure the car is parked on a level surface with a full battery (or the engine running to prevent power-saving shutdown).
Click the button that says "Download" or "Top Download" (the term "top download" simply means downloading the highest/fullest version available). The file will typically be a .bin, .zip, or .iso file.