When searching, use exactly: "Nokia 501 RM-902 usb driver" site:forum.xda-developers.com or "Nokia Asha 501 driver download"
Here’s where things get frustrating. The Nokia 501 doesn’t use standard Android ADB drivers. It doesn’t use Nokia’s later Windows Phone drivers (like for the Lumia series). Instead, it relies on a legacy package often labeled: . nokia 501 rm 902 usb driver