The is a specialized programmer file used to interface with the device's Qualcomm Snapdragon 215 chipset when it is in Emergency Download (EDL) Mode . Key Functions of the Firehose Loader
Once a Sahara client sends the correct magic + size + hash, the PBL accepts a Firehose loader binary over the (max packet size 1024 bytes). After loading into RAM, the DSP jumps to the Firehose entry point. Firehose then switches to a streaming command protocol over the same USB endpoint. Nokia 1.4 Firehose Loader
Click → FireHose Configuration .