[Upgrading, Modifying and Unlocking] ahmed.zunaid:
Symphony W25 device Finally Rooted !

All credits go to jason_cheng

Procedure given below:

1. First of all, you need Drivers For your symphony W25 (Smphony.W25/Karbonn.A7/Mobistar.S01/Ktouch.W650 All are the same phone)

Driver for winXP

Drivers for Win 7 / Win 8

64-Bit Win 7 Drivers

Install them while connecting your phone on "USB debugging mode", and going to "device manager > other devices" on your pc. After installation disconnect the phone.

(I believe some of you are having problems installing the drivers. I recommend you install the drivers on a freshly installed winXP pc. I faced a lot of trouble doing it on my Win8 pc)

2. Download Android software development kit (SDK) from Here and install in pc. Default installation Directory should be C:\Program Files\Android\android-sdk

3. Android SDK may need Java development kit (JDK) installed in pc. If you need jdk, go here or go to their Website to download

3. Download Fastboot From Android Central and keep it inside

C:\Program Files\Android\android-sdk\platform-tools folder

4. Download Clockwork Mod Recovery for w25 from Link #1 or Link #2, unzip and copy to the same folder. replace duplicate (if prompted).

5 hook your phone up with pc in USB debugging mode and go to C:\Program Files\Android\android-sdk\platform-tools folder, Press Shift+right click inside that folder and select "open cmd window here". It opens a cmd window for that folder.

In the cmd window, type

adb devices

If the driver installations are correct, you'll see your device connected as w650 (as symphony is re-branded from k-touch w650)

6. Disconnect phone from pc and reboot it into the bootloader, by turning it off and holding [vol-up]+[power]

Till screen turns green and says fastboot:recovery ?, Like below

7. Plug your phone into your computer. On cmd window, type:

fastboot devices

Reply should be "???????????? fastboot" Meanng fastboot detected the device.

8. In the cmd line, type

fastboot boot recovery-english.img

And that's it. You'll have booted into the custom recovery (cwmr), and from there you can do a full backup, or restore a backup, or wipe the phone. Use vol up/down to navigate through screen and Power to select an item.

9. Use CWMr to backup your ROM. (It will be saved in: "SD card/clockwork mod/backup" on phone.) and reboot. Copy the backup into pc for further use.

Step 8 was to make sure cwmr works on the phone. It's a temporary port of cwmr on your device.

if problem occurs (less likely to occur), let us know in a comment and don't proceed further.

Otherwise, Proceed below for permanent port..

10. Repeat step 6 and 7. Go to C:\Program Files\Android\android-sdk\platform-tools folder and click on recovery.bat file. Click on it and in the next window, Press any key

Permanent port will be completed

reboot phone if not rebooted automatically.

11. To check cwmr, Repeat step 6 but keep pressing the two buttons even if the screen turns green (fastboot). Continue until.....

screen is red (recovery). after that you'll see Clockwork mod recovery page.

You'll need it to restore your original rom if you mess up anything.

12 In CWMr,

a)]Go to Advanced

b) Choose "Wipe dalvik-cache"

c) Now go to "Mounts & Storage"

d) Choose "Format /cache"

e) Shutdown your phone

13. Download and unzip bootrepack from this post (by jason_cheng). Copy the "boot.img" file from "rootrepack" folder and paste to C:\Program Files\Android\android-sdk\platform-tools folder

14. Repeat steps 6 & 7 (green screen)

15. In cmd window type

fastboot flash boot boot.img

and

fastboot reboot

see image below if you have any confusion.

16. After the phone is restarted, type in cmd window:

adb shell id

which should result

"uid=0(root) gid=0(root)"

Rooting is now Unofficially completed

17. To verify, Type each line in cmd window, and press enter

adb shell

echo "1" > /system/pwned

cat /system/pwned

If the Reply to the last line is "1", Congrats ! you have root access to your phone!! :)

Now remove that test file you created just now. Type:

rm /system/pwned

What now?

18. Install "Superuser" from Play store

It does not come with su binary. For that, Go to this post and download only the attachment. Unzip it and put the files in C:\Program Files\Android\android-sdk\platform-tools folder.

19. Now open cmd window, type each line and enter.

adb remount

adb push su /system/xbin/su

adb shell

chmod 4755 /system/xbin/su

now open superuser and check for su binary. I don't recommend su update.

20. Install "Busybox free" from Play store (optional)

Rooting Officially Complete.​

If you face problems at any step, please let us know in comments. We'll try to help.you out.

Also feel free to try out the IceCream Sandwitch based roms & the upcoming Jelybean rom for Symphony W25 on the second post of this thread.

If any of you come across a new rom for w25. Please do share.

If you come across dead links on my thread, plz let me know by posting comments, or PM me.

If you find this post useful, then plz hit the thanks button and share it with people who have this phone and waiting for root

End of tutorial.​

.usefull links:

Karbonn Mobile A5 & A7 (Android 2.3.6)

Link2sd tuorial in bangla: সহজেই বাড়িয়ে নিন অ্যান্ড্রয়েডের ইন্টারনাল মেমোরি

How To Solve Internal Memory Problem(Great Post)