Oppo F1s is a popular smartphone model released by Oppo, a Chinese electronics manufacturer. The device was launched in 2016 and comes with a range of impressive features, including a 5.5-inch HD display, 13MP rear camera, and a powerful octa-core processor. However, like any other smartphone, Oppo F1s may encounter software issues or require a firmware update to improve performance, fix bugs, or add new features. In this paper, we will discuss how to download and install Oppo F1s firmware version 7-1-2.