How to install Android 4.2 Jellybean on Xolo A800This ROM update is launched in two variants. You can update your A800 yourself or by visiting nearby Xolo service center. If you are beginner to Android world then please visit your nearby service center and ask them for ROM update. They will do it for free. Manual Method In case you are experienced with Android niche then you can step further will manual method which you can try of your own (please opt this method only if you have proper knowledge as it might brick your mobile even). Before trying the main tutorial, please follow these pre-requisites. These pre-requisites will secure your mobile from all kinds of major threats. Now let’s move to main part: 1. Download Android 4.2 Package on your computer. 2. Take USB and move the downloaded package to your phone memory. Don’t move it to external SD card. During USB interfacing, please select USB as Mass Storage option. 3. Now go to Xolo Care icon and check for Update option. (You will get Xolo Care icon in Apps menu). 4. Now select the copied file (which you transferred from computer to mobile in 2nd step). 5. Now flashing process will start and will take around 2-4 minutes. 6. Once the flashing process is completed, reboot your mobile. First reboot might take more time than usual, so please be patient. Congrats! You have successfully updated your Xolo A800 with Android 4.2 Jellybean. NOTE: This update might not be available in all the service centers so better to call nearby service center (or Xolo customer care) for update confirmation rather visiting there directly.