01/01/2013

Karbonn A21 gets Clockworkmod Recovery port; How to flash

A Karbonn A21 running
the Clockworkmod Recovery
We all know how important it is to have a clockworkmod recovery for the sustained development of the device. (If you didn’t know this, read more about clockworkmod.) Clockworkmod recovery (or many other custom recoveries) enable developers and users alike to test out roms without fearing about bricking their device, as the nandroid backup took by cwm can be restored at any time later on, in case of any mishap with the device.
Karbonn A21, the competitor to well established devices like Micromax A110, hasn’t been the phone developers had been looking for. The limited amount of development on this phone is a proof for that. The phone was rooted quite a while back and it’s now that Eklovya (the same guy who has ported cwm to Micromax A56, Karbonn A7+ etc.) stood up to the occasion and compiled a port of the cwm recovery for Karbonn A21. Interested in flashing the custom recovery? Read on for detailed steps.
Disclaimer: Flashing CWM Recovery will overwrite stock recovery. Only you shall be responsible for any damage inflicted to your device.

How to flash CWM Recovery on Karbonn A21:

  1. Root your Karbonn A21 if you haven’t till now.
  2. Download this zip file.
  3. Extract the contents anywhere and copy the recovery.img file from there to the root of your sd card. (Root of sd card means in the sd card but outside any folders.)
  4. Install “Terminal Emulator”  on your phone.
  5. Open up terminal emulator on your phone and enter the command
    su
  6. Giving the "su" command will open a prompt asking you to give superuser rights to the app. Give the app these rights by tapping the “allow” (or equivalent") button.
  7. Then, give this command
    dd if=/dev/block/mmcblk0p16 of=/sdcard/originalrecovery.img bs=4096
  8. And finally, enter
    dd if=/sdcard/recovery.img of=/dev/block/mmcblk0p16 bs=4096
  9. This will flash clockworkmod rcovery on your device.
  10. If you want to flash stock recovery back to your device, replace the commands in step 7 with
  11. dd if=/dev/block/mmcblk0p16 of=/sdcard/cwmrecovery.img bs=4096
    and
    dd if=/sdcard/originalrecovery.img of=/dev/block/mmcblk0p16 bs=4096
    Note: If you don't know the key combination to boot into your recovery (I don't know what's that for your device), use quick boot app.
    This will restore stock recovery on your device. Unrooting from there on will restore the warranty for Karbonn A21. Enjoy the new recovery on your deice. Note that there is a known bug that is making it difficult to the previous menu. You have to bear that. Here is the thread put up by Eklovya from where this method originated. The steps to flash stock recovery back were added by me though.
    Have fun with your new recovery!
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