: When a device is "hard bricked," it may show a black screen and only be recognized as "Qualcomm HS-USB QDLoader 9008" by a PC. A patched firehose allows MiFlash or similar tools to send raw data to the device's storage.
Using a patched firehose requires precision, as using the wrong file can permanently damage the UFS storage. EDL Flashing Xiaomi (Qualcomm) devices : r/SuchareksGuides patched firehose file for poco x3 pro 2021
: It is used by technicians for IMEI repair or fixing software issues like "hang on logo" when standard Fastboot flashing fails. How to Use the Patched Firehose File : When a device is "hard bricked," it