: For a completely "dead" device that does not respond to power, you must open the back cover and short specific Test Points on the motherboard to force the phone into 9008 EDL Mode . This allows professional tools to communicate directly with the Qualcomm chipset for low-level repairs.
: If the device still has some life, holding Volume Up + Power while plugged into a charger may trigger Huawei eRecovery . This official method connects to Wi-Fi to download and install the latest authorized firmware version for your specific serial number, which is the safest way to avoid losing your IMEI. Step-by-Step Restoration (Professional Tools)
If standard recovery fails, a technician usually follows these steps to ensure no data loss: : Download the correct firmware for