Final answer:
The 'waiting for device' message in fastboot mode usually indicates a communication issue between the computer and the device.
Step-by-step explanation:
When you encounter the 'waiting for device' message in fastboot mode, it typically means your computer is unable to communicate with your smartphone or tablet. This can often be resolved by ensuring you have the correct drivers installed, checking the USB cable and port, or by using different fastboot commands.
- Make sure that the device's drivers are properly installed on the computer.
- Use a high-quality USB cable and try different USB ports on your computer.
- Check if USB debugging is enabled on the device, which is necessary for fastboot operations.
- Try using another computer to rule out any system-specific issues.
- On Windows, install the universal ADB driver or the specific driver for your device from the manufacturer's website.
Ultimately, if the basic troubleshooting steps do not solve the problem, you may need to consult the device’s manufacturer support for further assistance.