Requirements: Your Lava Iris 405 smartphone should have atleast 10-20 percent of battery to perform the rooting process.
Root Lava Iris 405 with Framaroot
Step 1: Enable USB Debugging on your Lava Iris 405. To enable USB Debugging: Open Settings > Developers Option > USB Debugging > Tick to enable.(Developers Option is hidden for Android 4.2.2 or above, to show this option Go to Settings > About Phone > Built Number (Tap on it for 5-8 times).
Step 2: On your Device, Open Settings > Security > Device Administration >Unknown Sources (tick to enable it).
Step 3: Download and install Framaroot Application on your Device. Once installation is completed you will be able to