This document serves as a technical reference for technicians and repair engineers to force the into EDL Mode (Emergency Download Mode - Qualcomm QDLoader 9008) . This procedure is required when the device is "hard bricked," stuck in a boot loop, or the bootloader is locked, preventing standard flashing via Fastboot.
The two EDL points are located near the battery connector and the rear camera module on the motherboard. note 9 pro max edl pointnotebook 2019
If you see "QUSB_BULK" or nothing, the short failed – retry. If you see "Sahara" fail, the driver is incorrect. This document serves as a technical reference for
The Xiaomi Redmi Note 9 Pro Max (launched in March 2020, but built on 2019’s Snapdragon 720G architecture) is a resilient mid-range device. However, like many Qualcomm-based smartphones, it is susceptible to hard bricks caused by corrupted bootloaders, incorrect firmware flashes, or failed OTA updates. When a device is completely unresponsive (no fastboot, no recovery, no charging LED), the last hardware-level lifeline is . If you see "QUSB_BULK" or nothing, the short
Unlike older Xiaomi devices (e.g., Redmi Note 7 Pro), the Note 9 Pro Max does allow entering EDL via key combinations (Vol+/Vol- + Power) due to Xiaomi’s anti-rollback and security patches. The only reliable method is to short two test points (EDL points) on the motherboard while connecting the device to a PC.
However, since you specifically asked for the most common search query matching that string refers to the Xiaomi Redmi Note 8 Pro .
Based on the keywords, you are likely referring to one of two popular devices from 2019:
