In theory, modifying the firmware of electronic devices may indeed be used to remotely control devices or steal information. This is called firmware attack or firmware hijacking. The implementation methods of such attacks include： -Remotely implant malicious firmware through vulnerabilities -Tampering with firmware in the supply chain - Use of unprotected update mechanism However, implementing such attacks faces many technical challenges： -Modern devices usually have firmware signature verification -Requires expertise in specific hardware -Many devices have a safe startup mechanism To protect the safety of equipment： -Install the official firmware update in time -Only get updates from official channels -Enable all available security features on the device -Use a device with secure boot and firmware protection This is a serious topic of network security, and only in a legal environment (such as security research and equipment maintenance) should the specific implementation be discussed.