If your bootloader was unlocked before the brick:
Here’s the story behind the and its connection to Xiaomi —a tale of reverse engineering, Android modding, and unofficial tools. qusb-bulk driver xiaomi
This article will dissect everything you need to know about the QUSB-BULK driver in the context of Xiaomi devices. We will cover what it is, why it happens, how to install the correct driver, and most importantly, how to rescue your device. If your bootloader was unlocked before the brick:
Around 2018–2020, forums like XDA and 4pda shared stories: a bricked Redmi Note 7, no fastboot, no recovery, only 900E port. Windows shows “QUSB_BULK” (or “Qualcomm HS-USB QDLoader 9008”)—but no driver works. Installing the custom driver (often Zadig or libusb-win32) lets tools like MiFlash (unofficial patched version) or edl.py send the firehose loader. Around 2018–2020, forums like XDA and 4pda shared
Technically, is the generic label Windows gives to a Qualcomm device in EDL mode when the proper drivers are not yet installed . To make the PC communicate with the phone, you must update this entry to the official Qualcomm HS-USB QDLoader 9008 driver. How to Resolve the QUSB_BULK State