On this page, you will find the official link to download Lenovo K920 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 K920 Stock Firmware (flash file)
File Name: Lenovo_K920_S288_20160224.zip
File Size: 1 GB
How to Flash: Follow Tutorial