If you already have microelephant crm installed and want to upgrade it to version 2.0 from 
version 1.9 please follow the steps below:

Process 1:

Simply upload the following files on your server

---------------Modified Files---------------------

app/Helpers/Helpers.php
app/Helpers/task_helper.php


Or alternatively

Process: 2

1. Make a backup copy of your existing files and database on your server
2. Delete all the files and folder accept the .env file, storage and public folder
3. Now go to microelephant_crm folder that you got after extracting the zip file and then 
   upload the files and folder to your server, accept the .env file, storage and public folder . 
4. Done