On Windows 10 and 11, disable driver signature enforcement if the Huawei bootloader interface shows a yellow exclamation mark in Device Manager.

Once in Fastboot mode, the device acts as a "reader" for diagnostic commands. By connecting the phone to a Windows PC with ADB (Android Debug Bridge) tools installed, you can read critical data such as:

Before your computer can read your device data, you must boot the phone into the correct state. your device completely. Connect a USB cable to your PC , but not the phone yet. Hold the Volume Down button. While holding the button, plug the cable into your phone .