The MSM8916 (Snapdragon 410) Firehose programmer is a specialized ELF binary file (typically named prog_emmc_firehose_8916.mbn) used to communicate with the device's Primary Boot Loader (PBL) via the Emergency Download (EDL) mode. 1. Abstract
OEM Locking: Some manufacturers (like Xiaomi or Nokia) require a "patch" or an authorized account to use the firehose file for flashing. How to Use the File msm8916 firehose file
If you tell me your exact device model, I can help locate the correct Firehose file for it. The MSM8916 (Snapdragon 410) Firehose programmer is a