Hold down the specific key combination (usually or Volume Down + Power ) and connect it to your PC via USB.
This is the most critical step. EDL (Qualcomm HS-USB QDLoader 9008) mode is a low-level, emergency download mode that allows direct communication with the device's flash memory, often used for unbricking. The ZTE Family Toolbox provides several ways to enter this mode: unlock zte kernel zdroid smt
