Lenovo Smart Assistant is software that provides tools for updating device ROMs, rescuing devices, and accessing online tips. It supports Windows operating systems and allows upgrading individual plug-in functions. The software guides users to update a device's ROM by downloading, transmitting, and flashing the ROM. It also guides users to rescue devices by downloading images, extracting them, and selecting online or local flashing. Additionally, it provides online tips by searching and filtering solutions matched from Lenovo's website.