The Windows Device Recovery Tool is a free utility provided by Microsoft to help users recover data from their Windows phones, including the Lumia 650. To use this method:
+---------------------------+
| EMERGENCY FILE TOP |
| Battery 9% - Low power |
| (5 files available) |
+---------------------------+
| [>] MedicalID.pdf |
| [>] Passport_scan.jpg |
| [>] Emergency_contacts.txt|
| [>] Insurance_card.png |
| [>] Offline_map_region |
+---------------------------+
| Swipe up to exit |
+---------------------------+
In the context of Lumia firmware, "Emergency Files" (often referred to as Emergency Flash Files or FFU segments) differ from standard Retail OS images. While a Full Flash Update (FFU) contains the entire operating system and partitions, Emergency Files are often stripped-down packages designed solely to resuscitate the device bootloader.
Even with the top emergency files, you might face issues.