Hello, the update should take roughly 15 to 20 seconds and prompt you when completed. Make sure there are no other applications running in the foreground or 3D applications running when running the update tool. If GPUZ is showing the correct VBIOS then the update must have been completed successfully.
9800X3D / 6400 CAS 28 / ROG X870 Crosshair / TUF RTX 4090