A firmware update is a software revision for embedded devices that enhances functionality, fixes bugs, or improves security. Firmware is the low-level software that directly interacts with hardware components, such as routers, printers, or smartphones. Regular updates are necessary to optimize performance and ensure compatibility with new technologies or security protocols. These updates may also address vulnerabilities identified over time, protecting devices from potential threats. Failing to update firmware may lead to inefficient operation or security breaches, making timely updates a critical aspect of device maintenance and management.