On this page, you will find the official link to download Lenovo S890 Stock Firmware ROM (flash file) on your Computer. Firmware comes in a zip package, which contains Flash File, Flash Tool, Driver and How-to Manual.
Download Lenovo S890 Stock Firmware (flash file)
File Name: Lenovo_S890_MT6577_S111_130201.zip
File Size: 596 MB
How to Flash: Follow Tutorial