here we will provide you the official link to download Lenovo Vibe K5 Note A7020A48 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 Vibe K5 Note A7020A48 Stock Firmware (flash file)
File Name: Lenovo_A7020a48_S312_MT6755_20160926.zip
File Size: 2 GB
How to Flash: Follow Tutorial