A firehose file, also known as a firehose loader or firehose programmer, is a small software component that plays a crucial role in the communication between a device's processor and other hardware components. It's responsible for loading and flashing firmware, as well as providing a way to interact with the device's hardware.
Paying a remote technician with an authorized account to flash the device via TeamViewer. If you'd like to move forward, let me know: patched firehose file for poco x3 pro 2021