This guide helps you in rooting Vibe K5 A6020a40 version with steps by step noob guide with means anyone can root there Vibe K5 using this simple guide.Thanks to xda dev Shreps for the TWRP of Vibe K5 you can download twrp recovery for Vibe k5 from below link.And follow these steps to root vibe k5 using supersu.zip.After that you can install custom roms like CM12 or Cm13 in your dveice.
1.Download Lenovo driver for PC and install it.
2.Make backup of your data.
3.Download ADB fastboot also for flashing TWRP recovery and extract it on desktop.
Let’s start the tutorial of how to root Lenovo Vibe K5.
Warning: The author is not responsible if you damage or brick your device. Do it at your risk and follow the instructions properly.
#How to Flash twrp recovery on Vibe K5.
1.Download TWRP Recovery for Vike K5.
2.Download Minimal fast boot and install it on the desktop.
3.Download latest SuperSUv2.65.zip and place it in your internal memory.
4. Now turn OFF you Mobile.
same time for 6 sec and release it you will again see the bootloader.Now plug your device into your PC.
Hold the shift key and right click on the mouse the in any blank space
in that folder, you will see open command window here click on that.
:recovery.img is the name of the TWRP recovery that you downloaded above
steps so you can rename according to the name of the file that you
paste in the Mfastboot folder.
9.You have successfully flashed TWRP Recovery in your Lenovo Vibe K5 running on android lollipop.
#How to Root Lenovo Vibe K5 using Supersu
1.Download Super su v2.68.zip and place it in your device memory
2.Then reboot your device into recovery mode.
3.Tap on “Install” in recovery mode and the select Super su v2.68.zip from your memory where you pasted it in 1st step.
4.Now After selecting the .zip file do “Swipe to confirm flash” at the bottom of the screen.
5.Once Flashed the Super su v2.68.zip files reboot your device. Done!
So till here you have successfully install TWrp recovery and rooted Lenovo Vibe K5.IF you face any problem then you can comment below.