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Micromax A90S gets Jelly Bean update with ZhaoBlastJB Custom ROM

Micromax A90S has received an unofficial Jelly Bean update just like its younger brother Canvas 2 did. We shall get to how to install Jelly Bean 4.1 on your Micromax A90S superfone Pixel in a short while.

So, how did the update come? As we all know, Micromax doesn't releases its kernel source, so that's make compiling newer versions an impossible thing. Just like Mobistel Cynus T2's JB update came as blessing in disguise, it's the A90S's rebranded brother Blu Vivo 4.3 which has received a Jelly Bean upgrade, thanks to which developers have been able to port Jelly Bean over to Micromax A90S. And the good thing is that there aren't any bugs at all. So you can enjoy all the hardware of your phone in full glory.

Features of the ROM:

  • Deodexed and zipaligned apps
  • Based on Android 4.1
  • LCD Density has been set to 250
  • Solved GPS Bug, lock time decreased
  • And a few mods from Sony phones

Before you proceed ahead:

  • Learn more about rooting and its benefits.
  • Make sure that youhave charged your phone.
  • Be warned that rooting voids your manufacturer warranty.
  • Enable USB Debugging first. If you have a device that runs on Gingerbread (Android 2.3 or below), go to Settings > Applications > Development. Instead, if you own a device running Android 4.0 or 4.1, go to Settings and then to Developer options.

How to install Jelly Bean Custom ROM on Micromax A90S:

  • First of all, you need to root your Micromax A90S and install clockworkmod recovery on it. Obviously, skip this step if you have already done that.
  • You will have to flash Blu Vivo's  JB firmware on your A90S otherwise it won't boot when you flash the ZhaoBlastJB rom on it. There is a good pictorial guide to help you do that here. This is the more difficult part of this guide. It is smooth sailing ahead.
  • Download the ZhaoBlastJB ROM and transfer it to your device's sd card.
  • Reboot into clockworkmod recovery on your mobile. Not sure how to do this? Switch off your phone and press and hold the key combination for your device. Generally, it is something like Volume Up + Power or Volume Down + Power button.
  • When you get to cwm recovery, use volume keys to scroll up and down and power key to select. Using the mentioned keys, select the Install zip from sd card option.
  • Browse to the location where you pasted the rom in step 3 and select it.
  • When the recovery is done with flashing the new rom on your device, reboot your phone and enjoy the Jelly Bean sweetness on your phone.
Head over to Bhardik's thread on xda if you want to suggest any change in the rom. Comment below if you weren't able to flash this rom. Share it with your friends to multiply the fun!