Custom ROM for Karbonn A21, Karbonn A9+ and Cherry Mobile Flare – DarkBoid ROM

The Android Community is never silent. Every developer out there is trying his best to serve the community with their best efforts. Custom ROMs are one such example of the work done by the devs to serve the community.

In this post I will be guiding you through a process to install Custom ROM for Karbonn A21, Karbonn A9+ and Cherry Mobile Flare – DarkBoid ROM.

Yes you read that right. This ROM has the ability to run on 3 different devices. Thanks to the work by Santo_Rock of XDA Forums.

So, in order to install this Custom ROM for Karbonn A21, Karbonn A9+ and Cherry Mobile Flare – DarkBoid ROM you will need to make sure that you have installed ClockworkMod on your respective device.

Here is the tutorial to install ClockworkMod for Karbonn A21

Keep in mind that the method to install ClockworkMod on Karbonn A9+ and Cherry Mobile flare is different. Search for the tutorials and install ClockworkMod and then proceed.


Download DarkBoid ROM
After downloading this ZIP file, move it into your phone’s SD card and follow the steps accordingly.


  • Make sure you have ClockworkMod on your device.
  • Move the downloaded ZIP to your SD card.
  • Reboot your phone in ClockworkMod recovery mode.
  • Go to mounts and storage > format system. Let it complete.
  • Now go back and choose to Wipe data/factory reset. This will also format your cache partition.
  • Now choose install ZIP from SD card. 
  • Navigate to the ROM ZIP and choose it.
  • It will start flashing.
  • It will take around a minute or two to flash the ZIP file.
  • After the ZIP has been flashed, reboot your device into Android system. It will take some time to boot up.

You have successfully flashed Custom ROM for Karbonn A21, Karbonn A9+ and Cherry Mobile Flare – DarkBoid ROM. Time to enjoy!


Take a look at the screenshots.

 Android 4.0.3

———-Android 4.0.3

———-Android 4.0.3

The source of these screenshots and the ROM is located at this XDA Thread.

So now that you have installed the Custom ROM for Karbonn A21, Karbonn A9+ and Cherry Mobile Flare – DarkBoid ROM you can enjoy it on your device.

If you have any doubts then you can use the comments section below.

  • narendra

    what is the pro and cons of this custom ROM ? does it work on A21 and has anyone have applied this

  • narendra

    has any one try this rom and what is pro and cons of this can one upload it and does it help in change of soun of karbon A21

  • Karoria

    I am using A9+. Kindly tell me whether stock ROM is OTG compatible? If not, this custom ROM is OTG compatible?

    • Karoria

      Nobody has given answer regarding OTG support. Anybody here who knows?

  • divengoal

    was not successful in a9+ (flare). boot loop. was lucky that I created image of the original ROM. will try again in another day.

    • Ujjwal Kumar

      Just make sure you follow steps carefully.

  • narendra

    can you please tell how can i create image of the orignal ROM and how can i take backup of my orignal ROM of Karbon A21 can any one help..
    as i want to install this custom rom but before that i need to backup the oringal ROM

    • Ujjwal Kumar

      In CWM just take a backup. Then install the ROM.

      • narendra

        thaks for reply one more favour can you please tell if i have install this custom rom and i want to revert back to original rom how that be done

        • Ujjwal Kumar

          Just restore the backup from CWM.

          • narendra

            thks for reply

          • narendra

            well restore is not working when i try to restore the orignal rom

  • narendra

    hello is this custom rom stable what is pro and cons of it

  • manju

    hey friend plz tell me how to install cwm recovery on karbonna1+

  • akshay

    are there any roms for karbonn a7+,or will this rom work with karbonn 7+

  • saikiranB

    does this rom support Swap memory of Swap partition

  • narendra

    any new rom update has come on Karbon A21 i mean jelly bean …

  • suren

    How can i upgrade 4.1 jelly bean n karbonn a21?

    • Ujjwal Kumar

      You cannot.

  • Ajinkya

    Hey can I replace. Png files from system ui/res/ from my current ROM by taking. Png files from other ROMs

    • Ujjwal Kumar

      Contact the dev for that. The link is in source at the end of the post.

      • Ajinkya

        I have installed your SUPERSTOCK Rom and it works very well(Thank you) now can i replace .png files??

        • Ujjwal Kumar

          What exactly do you want to do?

          • Ajinkya

            See when you tap at the android version 4.0.3 the ics android appears
            I want to change the.png files such that the jellybeanAndroid will appear

          • Ajinkya

            OK. Thanks I have figured it out I have changed the Android Image of ICS to Red bean/Jellybean by changing the platlogo.png

  • rahul

    can i use it on karbonn a9

    • Ujjwal Kumar


  • perry Italia

    hello sir my karbonn a21 is almost dead ..wn i power on it only shows powering on animation for long time and then switched off..i also hard reset ,reboot,clean cache and all method on power key and vol up button after red screen ,but problem continues,my computer also not detect it..wt should i do,?pls help..

    • Ujjwal Kumar

      Take it to the service center asap. They will fix it.

  • naresh

    HI ujjawal, i have rooted my karbonn a9 now i want to update it upto jelly bean so is there any rom availeble or is it possible?

    • Ujjwal Kumar

      There is no JB ROM for your device yet. By the way my name is Ujjwal :) not Ujjawal.

  • younot me

    Is there a way to upgrade karbonn a9+ to 4.1.2/jellybean?

    • Ujjwal Kumar

      No and next time use a real email so that your email doesn’t go in Spam section.

  • Duryodhan Shrestha

    hello, Ujjwal Kumar Ji, thank you for the post I had tried your method before it worked. It installed nexus in my a21. but First I had a major problem with my network an then I couldn’t swap my memory as it again asked for custom rom. so just curious if we can really increase the ram of the device with this custom rom?

  • AniMysore74

    I have two questions
    1) Is there a way back to change to the original rom?
    2) Is it possible to install jellybean on my phone (A21)

    • Ujjwal Kumar

      1. Take a backup in CWM so that you can roll back by just restoring the backup.
      2. No.

      • AniMysore74

        thank you!

        • Ujjwal Kumar

          You are welcome.

  • Amandeep Singh

    is there jelly bean update for karbonn A25 duple

  • Azar

    Hi ujjwal, I have a karbonn a9+ with me which does boot. the boot image loads and after that it does not show up. Please help.