Deleted my only Launcher and APK - Black Screen. Please help! I have a Lenovo A806. The device was rooted and I downloaded a root uninstaller from the PlayStore to uninstall some apps that I couldn't otherwise. 

In the process, among other apps, I deleted the only launcher I had on the phone (Lenovo Launcher) and I might have deleted the APK (not sure about the APK). The result was a black screen without any apps. 

When turn on the phone I can see the home screen (same one you see before you unlock keyboard) and I also have some of the functionalities (eg messages, can make calls etc). However, if I open one of these functionalities and I click on the "back" button, the screen goes completely black and the phone goes unresponsive.

I tried to,


reset factory settings by holding the Volume Up + Down + On/Off button which opened the "Lenovo Recovery" screen and I choosing the "wipe user data (both fuse format and fuse wipe data). 
install update package option and I rebooted the phone. Nothing of those worked. 


Could anyone direct me towards the right way?
Open play store in your pc
Install any launcher app like this
When installed you will get a prompt in notification
Clicking it will take you to play store
Click open which will give a launcher