Flashing refers to the process of modifying the firmware of a device, such as a smartphone or router, to change its software or features. This can involve installing a new operating system or restoring the device to its original state. Users often flash their devices to enhance performance, fix bugs, or gain access to additional features not available in the stock firmware. The process typically requires specific tools and software, along with a compatible firmware file. Flashing can void warranties and may lead to device malfunctions if not done correctly. It is essential to follow instructions carefully to avoid potential issues.