I have Micromax A61 with 4.1 Jelly Bean. I rooted it using Kingo Root. I tried a performance boosting app called Chainfire 3D. Now it's stuck in boot screen.
I don't have CWM or TWRP recovery and USB debugging is OFF.
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- Follow this tutorial on YouTube to install and open a program which you will use to uninstall the driver of ChainFire installed on your device.
- Start your phone into recovery mode (Home + Vol up + Power).
- Plug in your phone via USB cord to your computer.
- Once you have ADB opened in command prompt, type
suto gain superuser access.
- After that, you type
- Then you type
Source: XDA Forum