Install CWM Recovery On Karbonn A21

  WARNING!

Warranty may be void of your device if you follow the procedures given on this page.

You only are responsible for your device. We won’t be liable if any damage occurs to your device and/or its components.

  GUIDE: CWM RECOVERY INSTALLATION ON KARBONN A21

Before you begin with guide instructions below, make sure your android device is adequately charged — at least 50% battery of the device.

  STEP 0: CHECK DEVICE MODEL NO.

To make sure your device is eligible with this, you must first confirm its model no. in ‘About device’ option under Settings. Another way to confirm model no. is by looking for it on the packaging box of your device. It must be A21!

Please know that this page is meant only for Karbonn A21. Please DO NOT try the procedures given here on any other device of Karbonn or any other company. You have been Warned!

  STEP 1: BACKUP YOUR DEVICE

Back up important data and stuff before you start playing around here as there are chances you might lose your apps and app-data (app settings, game progress, etc.), and in rare case, files on the internal memory, too.

For help on Backup and Restore, check out our exclusive page on that linked right below.

► ANDROID BACK UP AND RESTORE GUIDE: APPS AND TIPS

 STEP 2: ROOT YOUR DEVICE

Your device should be rooted in order to flash the recovery using the method discussed in the guide.

If you are not sure on how to root your Karbonn A21, follow our definitive guide on rooting Karbonn A21 as a pre-requisite.

►ROOT YOUR KARBONN A21

   STEP 3: INSTALLATION INSTRUCTIONS

  DOWNLOADS

Download the file given below and transfer it to a separate folder on your phone and remember the location.

  RECOVERY FILE

DOWNLOAD LINK | File name: recovery.img (10.68 MB)

  TERMINAL EMULATOR (FOR METHOD 1)

You can always download the latest version of Terminal Emulator from the Google Play Store link here.

  MOBILE UNCLE TOOLS (FOR METHOD 2)

You can always download the latest version of Mobile Uncle Tools from the Google Play Store link here.

  STEP-BY-STEP GUIDE

Important Note: Backup important files stored on internal SD card of your device, so that in case a situation arises requiring you to do a factory reset after flashing CWM Recovery, which might delete internal sd card too, your files will remain safe on PC.

METHOD 1: TERMINAL EMULATOR METHOD

1. Download the Recovery file, recovery.img and transfer it to the root of your phone using a USB Cable.
2. Download the Terminal Emulator app from the Google play link provided in the Downloads section and install it.
3. Launch the Terminal Emulator app from the app drawer. It should look something like the screenshot below:
   
4. Now type su in the Terminal emulator to gain root permissions. Type/Paste the below command inside the command prompt:

   su

   This command will request for the root permissions. If the Superuser requests for the root permission click Yes.

5. To be on the safe side, we will back up the original recovery in the SD card in case if anything goes wrong. For this type/paste the below command inside the command prompt:

   dd if=/dev/block/mmcblk0p16 of=/sdcard/originalrecovery.img bs=4096

   This command will backup the original recovery in the SD card with the name Originalrecovery.img.

6. Now to flash the CWM recovery from SD card, type/paste the below command inside the command prompt:

   dd if=/sdcard/recovery.img of=/dev/block/mmcblk0p16 bs=4096

   This command will flash the CWM recovery to your phone.

That’s all, you have successfully flashed the CWM recovery on your device. If you need help regarding this, feel free to ask us in comments below.

In case if there is any problem flashing the CWM recovery using the terminal emulator we have another method here which uses the mobileuncle tools app for flashing the recovery.

METHOD 2: MOBILE UNCLE TOOLS

1. Download the Recovery file, recovery.img and transfer it to the root of your phone using a USB Cable.
2. Download the Mobile Uncle Tools app from the Google play link provided in the Downloads section and install it.
3. Launch the Mobile Uncle Tools app from the app drawer. It will request you for the Root permissions.
   └ Note: If it doesn’t request for root permission, follow the root guide given above carefully once again.
   
4. Now confirm the root request by pressing on grant. Now it will show you the app main page. Click on the Recovery Update option in the app.

   

5. It will show you the search results in another page listing the recovery.img you placed in the root of your SD card.

   

6. Now click on the recovery.img. It will pop-up a dialogue box Are Sure flash recovery! . Click Ok.
   └ Note: The screen may go unresponsive for sometime, don’t panic. It is due to the flashing of the recovery.

   

7.  After flashing it will ask whether to reboot into recovery. Click Ok. It will automatically take you into the CWM recovery.

   

That’s all, you have successfully flashed the CWM recovery on your device. If you need help regarding this, feel free to ask us in comments below.

Now you can boot into recovery mode. If you’re rooted, the easiest way to boot into recovery mode would be using the QuickBoot app. If not rooted, then follow the instructions below:

• Power off your device and wait for 5-10 seconds until the device is fully switched off.
• Press Power + Volume Up buttons together to enter the Fastboot mode. Just release the Power button now.
• Press the Volume Up button continuously until the Screen glows red color and then release the Volume Up button. You are in Recovery mode.
  └ In Recovery mode, use Volume buttons to navigate Up and Down between options and use Power button to select an option.

FEEDBACK US!

It was easy to flashing CWM Recovery on your Karbonn A21, right? Let us know how it is to your liking in comments below.

Your suggestions and queries, if any, are most welcomed!