typically indicates a critical communication failure between the device's bootloader and the secondary mode, or that essential boot partitions are corrupted Android Open Source Project Core Causes Missing Fastbootd Drivers
Stay calm, keep your USB cable firmly connected, and work through the methods methodically. Your Android device is a resilient piece of hardwareāit wants to live. You are its only hope. keep your USB cable firmly connected
: Using an old version of ADB or Platform-Tools that does not support FastbootD. keep your USB cable firmly connected