These files act as a "firehose" to communicate with the Qualcomm chipset when the standard operating system and recovery modes are inaccessible.
Emergency Files are low-level factory programming data designed to resurrect a device with a corrupted boot loader (MBR) or a dead Qualcomm Emergency Download (EDL) mode. They bypass the normal Flash app interface and talk directly to the phone’s processor via the or WP IDT tools. lumia 650 emergency files work