Right-click the unrecognized device and select .

(requires USB debugging enabled in Developer Options)

Critical for flashing firmware if the device is in a "preloader" state. Installation Methods

: You can download standalone installers (like Nokia Smartphone USB Driver v1.4.15) from TechMesto which are extracted from official Nokia service tools.

: Right-click it → Update driver → Browse my computer for drivers .

buttons simultaneously while plugging the cable into your phone.