Before executing an EDL flashing command, your computer must be properly configured to identify the low-level hardware communication protocols. 1. Install Qualcomm USB Drivers
Sahara protocol error or Firehose handshake failed
Check your Windows . Under the "Ports (COM & LPT)" section, it should display Qualcomm HS-USB QDLoader 9008 (COMxx) . Step-by-Step Guide to Using the Firehose Loader with QFIL Nokia 1.4 Firehose Loader Download- - Google
For a Qualcomm-powered phone like the Nokia 1.4 (which runs on a chipset), the Emergency Download (EDL) mode is the last line of defense.
Download a compatible service tool such as QFIL (Qualcomm Flash Image Loader), QPST, Miracle Box, or UnlockTool. Nokia 1.4 Firehose Loader Download Specifications Before executing an EDL flashing command, your computer
Use a shorter USB 2.0 port rather than a USB 3.0 port; reinstall the QDLoader drivers. Incorrectly matched MBN programmer file.
A firehose loader is a specialized programmer file ( .mbn or .elf ) used for Qualcomm-based devices. When a phone is completely dead (hard bricked), it cannot enter fastboot or recovery mode. EDL mode allows the device to accept direct programming. The acts as a driver to bridge the computer and the phone's eMMC/UFS storage, enabling flashing via tools like QPST or QFIL . Nokia 1.4 Specifications (Context) Under the "Ports (COM & LPT)" section, it
: A programmer file specific to the Snapdragon 215/MSM8917 architecture.