Follow these Steps to Root your Canvas 4:
Step 1: Download Framaroot app click here.
http://d-h.st/01K
Step 2: Copy Framaroot app in your phone internal storage or external SD card.
Step 3: Go to setting >>> tap on security >>> tick on unknown sources box
Step 4: Install Framaroot App on your phone. Tap on App >>> Tap on verify and install >>> Tap on Just once >>> Install.
Step 5: Open the Framaroot App and Select “Install Super Su”
Step 6: Click on “Boromir”
Step 7: Now Reboot your Mobile. That’s all
After this root process you will find SU app in your application menu. You can manage your rooted phone by Su app. Su app work as like firewall, So you should be careful in giving permission to the any app by Su app. If you want to check your Mobile rooted or not try this app Root checker
How to install CWM recovery in Canvas 4 A210:
Step 1: First root your phone.
Step 2: Download the CWM Recovery Click here
http://d-h.st/SZ7
Step 3: Copy CWM recovery file on your SD Card and file must be recovery.img. If it has different name then rename it.
Step 4: You can find this Mobile Uncle Tools app on Play Store Click here.
Step 5: Tap on the Mobile Uncle Tools app >>> After then you will get a popup tab for Permission >>> Tap on the Grant for SU app permission >>> Now Tap on the Recovery Update option.
Step 6: Now Tap on the Apply option. After then you will get two option reboot your Device or go to recovery mode. Choose as your requirement.
since you want to backup the stock rom first
so select backup and restore and backup your stock rom from there
press thanks if i helped