This is the first ever guide written by me, and I am not an expert in android and recovery, so please pardon if any mistakes are found. Lets correct if any. Also at this time Karbonn A21's system.img file is not available hence we had to perform some hard steps to get the job done.
CAUTION : WARRANTY VOID : I'm not responsible if any hard/soft damage occurs to your handset after/during using this guide. I successfully unbricked my A21 and want all of you to understand the recovery procedure properly before doing anything. Rooting your handset and applying another recovery/ROM certainly voids manufacturer's warranty. Do anything mentioned here ONLY if you understand it.
The only reason I posted this is to save any karbonn a21 users time if his device gets bricked. I had to keep my business aside for a whole day to recover my Karbonn A21 in working state.
You will have to keep handy :
1) Drivers for Karbonn A21 Click here
1) CWM by Eklovya Click here
2) AIO Flasher by Fonehacker Click here
3) Custom ROM flashable reloaded (*.zip) and A9+ system image (system.img) (because A21 's system image was not found at this time.) here and here
Also use Root_with_Restore_by_Bin4ry_v18 to root your karbonn a21 whenever necessary.
First of all you must understand that three partitions are necessary in Android : 1) Boot, 2) System, 3) Recovery
Other than these, there are Data, Cache, etc.
Unbricking an Android handset involves
1) Repairing Boot partition in fastboot mode using AIO Flasher to flash a proper boot.img file to the handset.
2) Installing proper Recovery partition in fastboot or normal mode using AIO Flasher, CWM Recovery by eklovya is a suitable solution.
3) Installing the System partition from a proper system.img file using AIO Flasher, or from a .zip file (Custom ROM) or a backed up ROM through CWM recovery.
Fastboot mode :
Fastboot mode is a Android device's state where it is possible to flash different partitions through a simple USB cable and PC. It can be activated on Karbonn A21 by keep pressed [Volume Up] key during power on (read : before power on) until your screen glows in green colour. Instantly release [Volume Up] key or your A21 may boot into recovery partition. On your PC proper drivers must be installed and fastboot.exe from Google is required to flash the partitions to the handset. AIO Flasher is a good GUI based solution for that.
Recovery :
During the above process, (for Karbonn A21) if you keep the [Volume Up] key pressed until the screen glows red, and then release the key, you enter into recovery mode. Updates to operating system's files can be installed from this mode. Stock recovery means manufacturer provided Recovery partition 'as it is' and Custom recovery is recovery partition OS developed by other developers, CWM recovery being the most popular one.
STEPS FOR UNBRICKING :
1) Repair Boot partition
Firstly enter into fastboot mode, and then use AIO Flasher to flash boot.img of Karbonn A9+ / Cherry Mobile flare to boot partition of your A21
2) Repair Recovery partition
Using AIO flasher, flash CWM Recovery's img file to recovery partition, in A21's fastboot mode. (For more info read this and this thread)
3) Install System.img to system partition
Currently A21's system.img is not available, else we could easily flash it to A21's system partition and get our handset running. Hence I flashed A9+ system.img downloaded from above (note that the downloaded file has extension .7z, to be renamed to .img), by AIO Flasher to system partition in fastboot mode. The flashed system rom was made for Karbonn A9+ hence it didn't work on my handset properly. I got white display and the touch screen and buttons didn't work. I used AIO flasher's screenshot facility to get into the handset and found that actually the system was up and running properly, except the display and touch interface. Then I decided to flash custom ROM and tried using santo_rock 's custom ROM DarkBoid. But it didn't work. Then I flashed ashoknraj 's custom ROM Flashable reloaded. It was success.
4) Install ROM for A21
To install the custom ROM via Eklovya's CWM recovery, the .zip file needed to be inside internal memory in the form of update.zip file stored in root folder, but the internal memory was not accessible through my PC as its usb drive was shown in windows explorer but was in [no disk] state, and I could not select [Turn on USB Storage] on my A21.
Here comes ADB 's power. I used ADB push to push the custom ROM into the internal memory.
Use the following command to push the update.zip (rename the custom ROM to update.zip) :
adb push update.zip /mnt/sdcard/sd_card/update.zip
Note the spaces and special characters properly.
The file is greater than 100 MB and hence some time will be required to transfer that file into memory.
If it shows error Permission denied, then remount using the command
ADB REMOUNT
and then try again.
Now we have the custom ROM ready in A21's internal memory, lets flash it. Boot into CWM recovery mode and select apply update.zip, let it install, and then wipe data/cache and reboot the device normally. (For more info read this thread)
If everything goes well, your A21 will now be successfully unbricked.
Of course you need patience and concentration to do all this.
DISCLAIMER : The above process and softwares are not my creation and are of respective developers. I just aggregated all these to one place.
Thanks for the guide. Do you know of any solution if phone only boots in QPST Download mode? No other methods like Fastboot, adb working for now.
I've connected via QPST tool but don't have images to flash. If you can research on it and provide the files to me, it would be great help.
Enter QPST download for karbonn A21
Is there any soution to this problem. It arises when I install cwm. But I have restored the default recovery by mounting it in linux.
When it shows this in sceen you can access all the partitions in linux.
I used this command to restore the default recovery as it was 16th partition that I changed with cwm image
dd if=/home/tushar/recovery.img of=/dev/sdc16 bs=4096
Also fastboot mode in not working on karbonn A21. powering up while holding up volume key shows me no green screen
karbonn a21 brickked
need help
need ashoknraj 's custom ROM Flashable reloaded
bgb7 said:
This is the first ever guide written by me, and I am not an expert in android and recovery, so please pardon if any mistakes are found. Lets correct if any. Also at this time Karbonn A21's system.img file is not available hence we had to perform some hard steps to get the job done.
CAUTION : WARRANTY VOID : I'm not responsible if any hard/soft damage occurs to your handset after/during using this guide. I successfully unbricked my A21 and want all of you to understand the recovery procedure properly before doing anything. Rooting your handset and applying another recovery/ROM certainly voids manufacturer's warranty. Do anything mentioned here ONLY if you understand it.
The only reason I posted this is to save any karbonn a21 users time if his device gets bricked. I had to keep my business aside for a whole day to recover my Karbonn A21 in working state.
You will have to keep handy :
1) Drivers for Karbonn A21 Click here
1) CWM by Eklovya Click here
2) AIO Flasher by Fonehacker Click here
3) Custom ROM flashable reloaded (*.zip) and A9+ system image (system.img) (because A21 's system image was not found at this time.) here and here
Also use Root_with_Restore_by_Bin4ry_v18 to root your karbonn a21 whenever necessary.
First of all you must understand that three partitions are necessary in Android : 1) Boot, 2) System, 3) Recovery
Other than these, there are Data, Cache, etc.
Unbricking an Android handset involves
1) Repairing Boot partition in fastboot mode using AIO Flasher to flash a proper boot.img file to the handset.
2) Installing proper Recovery partition in fastboot or normal mode using AIO Flasher, CWM Recovery by eklovya is a suitable solution.
3) Installing the System partition from a proper system.img file using AIO Flasher, or from a .zip file (Custom ROM) or a backed up ROM through CWM recovery.
Fastboot mode :
Fastboot mode is a Android device's state where it is possible to flash different partitions through a simple USB cable and PC. It can be activated on Karbonn A21 by keep pressed [Volume Up] key during power on (read : before power on) until your screen glows in green colour. Instantly release [Volume Up] key or your A21 may boot into recovery partition. On your PC proper drivers must be installed and fastboot.exe from Google is required to flash the partitions to the handset. AIO Flasher is a good GUI based solution for that.
Recovery :
During the above process, (for Karbonn A21) if you keep the [Volume Up] key pressed until the screen glows red, and then release the key, you enter into recovery mode. Updates to operating system's files can be installed from this mode. Stock recovery means manufacturer provided Recovery partition 'as it is' and Custom recovery is recovery partition OS developed by other developers, CWM recovery being the most popular one.
STEPS FOR UNBRICKING :
1) Repair Boot partition
Firstly enter into fastboot mode, and then use AIO Flasher to flash boot.img of Karbonn A9+ / Cherry Mobile flare to boot partition of your A21
2) Repair Recovery partition
Using AIO flasher, flash CWM Recovery's img file to recovery partition, in A21's fastboot mode. (For more info read this and this thread)
3) Install System.img to system partition
Currently A21's system.img is not available, else we could easily flash it to A21's system partition and get our handset running. Hence I flashed A9+ system.img downloaded from above (note that the downloaded file has extension .7z, to be renamed to .img), by AIO Flasher to system partition in fastboot mode. The flashed system rom was made for Karbonn A9+ hence it didn't work on my handset properly. I got white display and the touch screen and buttons didn't work. I used AIO flasher's screenshot facility to get into the handset and found that actually the system was up and running properly, except the display and touch interface. Then I decided to flash custom ROM and tried using santo_rock 's custom ROM DarkBoid. But it didn't work. Then I flashed ashoknraj 's custom ROM Flashable reloaded. It was success.
4) Install ROM for A21
To install the custom ROM via Eklovya's CWM recovery, the .zip file needed to be inside internal memory in the form of update.zip file stored in root folder, but the internal memory was not accessible through my PC as its usb drive was shown in windows explorer but was in [no disk] state, and I could not select [Turn on USB Storage] on my A21.
Here comes ADB 's power. I used ADB push to push the custom ROM into the internal memory.
Use the following command to push the update.zip (rename the custom ROM to update.zip) :
adb push update.zip /mnt/sdcard/sd_card/update.zip
Note the spaces and special characters properly.
The file is greater than 100 MB and hence some time will be required to transfer that file into memory.
If it shows error Permission denied, then remount using the command
ADB REMOUNT
and then try again.
Now we have the custom ROM ready in A21's internal memory, lets flash it. Boot into CWM recovery mode and select apply update.zip, let it install, and then wipe data/cache and reboot the device normally. (For more info read this thread)
If everything goes well, your A21 will now be successfully unbricked.
Of course you need patience and concentration to do all this.
DISCLAIMER : The above process and softwares are not my creation and are of respective developers. I just aggregated all these to one place.
Click to expand...
Click to collapse
I followed the above steps and could come till Flashing System.img the links of ashoknraj 's custom ROM Flashable reloaded are not working I request you to please upload the rom and post the link
thanks
bgb7 said:
This is the first ever guide written by me, and I am not an expert in android and recovery, so please pardon if any mistakes are found. Lets correct if any. Also at this time Karbonn A21's system.img file is not available hence we had to perform some hard steps to get the job done.
CAUTION : WARRANTY VOID : I'm not responsible if any hard/soft damage occurs to your handset after/during using this guide. I successfully unbricked my A21 and want all of you to understand the recovery procedure properly before doing anything. Rooting your handset and applying another recovery/ROM certainly voids manufacturer's warranty. Do anything mentioned here ONLY if you understand it.
The only reason I posted this is to save any karbonn a21 users time if his device gets bricked. I had to keep my business aside for a whole day to recover my Karbonn A21 in working state.
You will have to keep handy :
1) Drivers for Karbonn A21 Click here
1) CWM by Eklovya Click here
2) AIO Flasher by Fonehacker Click here
3) Custom ROM flashable reloaded (*.zip) and A9+ system image (system.img) (because A21 's system image was not found at this time.) here and here
Also use Root_with_Restore_by_Bin4ry_v18 to root your karbonn a21 whenever necessary.
First of all you must understand that three partitions are necessary in Android : 1) Boot, 2) System, 3) Recovery
Other than these, there are Data, Cache, etc.
Unbricking an Android handset involves
1) Repairing Boot partition in fastboot mode using AIO Flasher to flash a proper boot.img file to the handset.
2) Installing proper Recovery partition in fastboot or normal mode using AIO Flasher, CWM Recovery by eklovya is a suitable solution.
3) Installing the System partition from a proper system.img file using AIO Flasher, or from a .zip file (Custom ROM) or a backed up ROM through CWM recovery.
Fastboot mode :
Fastboot mode is a Android device's state where it is possible to flash different partitions through a simple USB cable and PC. It can be activated on Karbonn A21 by keep pressed [Volume Up] key during power on (read : before power on) until your screen glows in green colour. Instantly release [Volume Up] key or your A21 may boot into recovery partition. On your PC proper drivers must be installed and fastboot.exe from Google is required to flash the partitions to the handset. AIO Flasher is a good GUI based solution for that.
Recovery :
During the above process, (for Karbonn A21) if you keep the [Volume Up] key pressed until the screen glows red, and then release the key, you enter into recovery mode. Updates to operating system's files can be installed from this mode. Stock recovery means manufacturer provided Recovery partition 'as it is' and Custom recovery is recovery partition OS developed by other developers, CWM recovery being the most popular one.
STEPS FOR UNBRICKING :
1) Repair Boot partition
Firstly enter into fastboot mode, and then use AIO Flasher to flash boot.img of Karbonn A9+ / Cherry Mobile flare to boot partition of your A21
2) Repair Recovery partition
Using AIO flasher, flash CWM Recovery's img file to recovery partition, in A21's fastboot mode. (For more info read this and this thread)
3) Install System.img to system partition
Currently A21's system.img is not available, else we could easily flash it to A21's system partition and get our handset running. Hence I flashed A9+ system.img downloaded from above (note that the downloaded file has extension .7z, to be renamed to .img), by AIO Flasher to system partition in fastboot mode. The flashed system rom was made for Karbonn A9+ hence it didn't work on my handset properly. I got white display and the touch screen and buttons didn't work. I used AIO flasher's screenshot facility to get into the handset and found that actually the system was up and running properly, except the display and touch interface. Then I decided to flash custom ROM and tried using santo_rock 's custom ROM DarkBoid. But it didn't work. Then I flashed ashoknraj 's custom ROM Flashable reloaded. It was success.
4) Install ROM for A21
To install the custom ROM via Eklovya's CWM recovery, the .zip file needed to be inside internal memory in the form of update.zip file stored in root folder, but the internal memory was not accessible through my PC as its usb drive was shown in windows explorer but was in [no disk] state, and I could not select [Turn on USB Storage] on my A21.
Here comes ADB 's power. I used ADB push to push the custom ROM into the internal memory.
Use the following command to push the update.zip (rename the custom ROM to update.zip) :
adb push update.zip /mnt/sdcard/sd_card/update.zip
Note the spaces and special characters properly.
The file is greater than 100 MB and hence some time will be required to transfer that file into memory.
If it shows error Permission denied, then remount using the command
ADB REMOUNT
and then try again.
Now we have the custom ROM ready in A21's internal memory, lets flash it. Boot into CWM recovery mode and select apply update.zip, let it install, and then wipe data/cache and reboot the device normally. (For more info read this thread)
If everything goes well, your A21 will now be successfully unbricked.
Of course you need patience and concentration to do all this.
DISCLAIMER : The above process and softwares are not my creation and are of respective developers. I just aggregated all these to one place.
Click to expand...
Click to collapse
what u mean bricked?......
when i wipe data.... the karbonn a21 is bricked.....
cant go int o recovery mode....
cant go into fastboot mode....
only connect with zeus flash drive......
now how to flash it?
how to go into recovery mode or fastboot mode?
any solution?
is there any solution for unbricking a21 with no adb or fastboot?
I tried to use AIO flasher but it doesn't detect anything.
QPST download mode is shown if i press power and volume- during bootup.
Fastboot mode is shown on phone but on PC its doesn't detect any android device at all. No ADB support either.
I've cwm recovery install but its not showing my SD card.
Is there anyway to unbrick my phone without taking it to service center?
Regards
Plz Help
need some serious help,...i have bricked karbonn a21,...it got bricked because i formatted the boot partition which was of harly 20-40kb,..i guess,...i managed to take a backup from the same running device,..i got two files which are AMSS.MBN and AMSSHD.MBN,...and i don't know what to do,...when i connect my phone it just shows,..qualcomm hs-usb qdloader 9008,...i tried qpst software but it doesn't seem supported,....plz help,...can anyone tell me my phones current state,...and the process of de-bricking,...thanks in advance,... :good:
help me,..
can anyone suggest what to do ahead,.....
Plz Help Out,...
i have hard bricked Karbonn A21,....and now with some help,...i programmed the bootloader,....with the qpst emmc software download,.....and after programming the bootloader it shows qualcomm mmc storage,...so i think its the time to fill the partition,...with programming mmc storage,...but the problem is i don't have the original files backed up,..but i do have a running A21,..can i backup the files somehow,.or i can get the files in a zip on the internet ,.........plz thanks in advance,..... :angel:
My Karbonn A21 is showing white screen what should i do
Hard bricked Karbonn a21
My phone karbonn a21 was hard brick and in QPST Download Mode it was connected to the PC and was recognized by the drivers too and I, from QPST CONFIGURATION of QPST.2.7.374 software I added port and From eMMC SOFTWARE DOWNLOAD APP I used BP FIRMWARE extracted files in 'load xml def' and 'load patch def' and also in both search path 1,2 I used the location of BP FIRMWARE. After waiting few minutes it said download complete and phone around 4 touchpad it blinked and i disconnected the phone from PC hoping it can go in fastboot mode but it didnt power on and cant go in qpst and fastboot mode ! Now when ever i connect the phone in Pc or charger it just directly starts blinking in keypad only. And in PC when connected it says USB media connected but there is no any removeable disc connected when i looked in My computer and also in device manager there is no any sign of mobile being connected in computer ! Can Anyone help me solve this problem ? help will be really appreciated ! P.S I used BP FIRMWARE of jellybean from this forum ==> forum.xda-developers.com/showthread.php?t=2330823
For karbonn a9+ ??
is flashing system.img sufficient to karbonn A9+??
---------- Post added at 12:26 PM ---------- Previous post was at 11:52 AM ----------
I have CWM Recovery installed.I accidently wiped system and sdcard and cant boot android. I have nandroid backup and stock rom for my karbonn A9+ in my pc and pda net driver already installed in my pc. How can i repair my karbonn A9+? Please reply ASAP.
need for karbonn a12
i've tried to install font...and my mobile stuck in bootanimation.
need a help in unbricking it.
help karbonn a21
my karbonn a21 device is not in warrenty i have rooted my karbonn a21
and install font changer software i change the font in it then it say reboot phone
i restat phone but when i restart phone it shows firstly karbonn logo and then go at anination it and android does not open
then i press volume + and power on it shows green screen it does no turn into red to restore factory setting and does not show the list
then i press volume- and power key it only shows ENTER QPST DOWNLOAD on black screen
i went to customer care they say that it is software sorting problem they say that phone is dead.
i want to itself repair it. Is there is any method to repair it or fresh install android in it?
and pls give me software link with tuutorial
also give me karbonn a21 drivers and how to instal in pc
i search so many website but i can not found any solution then i foun your link relatd to this and i m telling problem to you
pls give me solution with tutorial
pls help urgent
alo pls tell me that there is any method to reinstall android in karbonn a21 as we install fresh window in pc after corrupt
pls give me solution with tutorial
Karbonn a21 Bricked. please help!
I tried installing Nokia X firmware on my Karbonn a21 but it gor stuck at black screen no boot logo or animation.
When i press volumeUP+ power itwas going to black screen only so i thought recovery partition is also gone
But volumeDOWN +power was working so i put it into QPST mode and tried EMMC download software with Karbonn a9+ bp firmware. it resulted in error of cookies not present!.
Then i got to know that volume up button was broken from hardware only. so i got it fixed.
Now i see green light for fastboot and then pink for recovery.
BUT if i leave power button on pink(recovery) it goes to black screen
And if i leaveit on fastboot(green) it stays green only .
I dont know if that failed QPST try blew my recovery or it got bad in the beginning only!
QPST mode is still working and drivers are getting detected as Qualcomm USb 9006.
Please tell me what i can do to revive my phone!. (Its not in warranty)
I can donate to whoever solves my issue!
Dude... i think the rom is not compatible with your phone....flash stock rom using qpst
---------- Post added at 04:05 AM ---------- Previous post was at 04:01 AM ----------
You need to be on fastboot mode to flash stock rom using qpst
1manshow said:
Thanks for the guide. Do you know of any solution if phone only boots in QPST Download mode? No other methods like Fastboot, adb working for now.
I've connected via QPST tool but don't have images to flash. If you can research on it and provide the files to me, it would be great help.
Click to expand...
Click to collapse
u can download Image of karbonn a21 from here
firmwarefile.com/karbonn-a21
set this link b'cos i cant send link on my msg
Bhaveshsuthar10 said:
u can download Image of karbonn a21 from here
firmwarefile.com/karbonn-a21
set this link b'cos i cant send link on my msg
Click to expand...
Click to collapse
Thanks mate for your help. But I've got it replaced within warranty from Karbonn and already sold it last year.
Naineesh said:
can anyone suggest what to do ahead,.....
Click to expand...
Click to collapse
Dude can u suggest me what to do when karbonn A21 is dead.
your help will be appreciated.