is notoriously difficult because Microsoft frequently lacks the necessary emergency files on its official Windows Device Recovery Tool (WDRT)
To resolve an "Emergency Files" error or a boot loop on a , you generally need to perform a Hard Reset using button combinations or use the Windows Device Recovery Tool to reinstall the firmware . Option 1: Hardware Button Reset lumia 650 emergency files fix
If the phone is detected by the PC (even as "QHSUSB_BULK" or similar): Connect the Lumia 650 via USB. lumia 650 emergency files fix