[Samsung Galaxy S Duos] rajaganesh:
I have installed and tested all the custom ROMs in this forum. Everything is unique in its own way.

I am from India ,and I found that my regional fonts(especially TAMIL) doesn't support with any of the custom ROM.

I tried copying fonts but doesn't work.

Then I recovered my stock firmware using recovery and tried to modify my stock ROM. I succeeded.

Its just a noob post but might help someone like me.

This is not only for S7562 but the links posted here is only for S7562.

STEP 1:

Rooting the device. Install superuser and clockworkmode recovery.

http://xdaforums.com/showthread.php?t=2344909

STEP 2:

Create a nandroid backup using cwm recovery.

https://www.youtube.com/watch?v=7815OazAECQ

STEP 3: Removing system apps.

1.Download and Install ES file Explorer.

https://play.google.com/store/apps/details?id=com.estrongs.android.pop&hl=en

2. Open ES explorer.

3. Go to Settings.

4. Click on the Root Explorer

5. Allow superuser permissions.

6. A popup menu appears. Select "One Key Uninstall" feature. Go to system apps.

7. Click and Hold to select multiple apps. Select all the unwanted apps like Samsung apps,chat on,chrome,email,gmail,video player etc.

8. Uninstall all.

STEP 4: Decreasing RAM usage

1. Download and Install Exposed Framework and Greenify.

https://play.google.com/store/apps/details?id=com.oasisfeng.greenify

http://xdaforums.com/showthread.php?t=2497957

2. Open Exposed Framework.

3. Go to Framework and select install\update to activate framework.

4. Go to Module Tick the box of greenify to activate module.

5. Then Reboot to make effect in changes.

6. Now open greenify and select apps you want to hibernate.

7. Select the apps that are running in background. example Facebook ,Twitter, messenger, uc browser etc.

8. Go to menu and click put into hibernation now.

9. This will hibernate all the apps and free the RAM.

STEP 5: Increasing Performance

1. Download and install no frills CPU control app.

https://play.google.com/store/apps/details?id=it.sineo.android.noFrillsCPU&hl=en

2. Open it and select the max and min freq.

3. Set the governor as performance.

4. Click on apply on boot.

5. Download Kernel from here and flash it through cwm.

http://xdaforums.com/showthread.php?t=2431352

6. Now open the app again and set the max freq as 1.306Ghz.

STEP 6: Changing Appearance

1. Select and Download any theme from here. Flash it through cwm.

http://xdaforums.com/showthread.php?t=2324451

2. Select and download any boot animation from here.

http://xdaforums.com/showthread.php?t=2349033

3. Flash it or just copy bootsamsung.qmg,shutdown. qmg and bootsamsungloop.qmg to ext SD card.

4. Use root explorer or es file explorer to copy the qmg files into

/root/system/media/ and /root/system/media/video/shutdown/ to their respective locations

5. Flash files from here for lock screen animation effects.

http://xdaforums.com/showthread.php?t=2331555

6. If you love any other effects in the custom ROM like PMP lite or ultra or L touch ROM(ROMs of s7562 ONLY), copy systemui.apk from /system/app and paste it in your root directory.

STEP 7: Installing a Launcher

1. I am using Nova launcher. It has some animation effects and also uses 20-36MB of RAM.

I suggest to restart the system on every steps. In case some kind of error occurred, just use recovery and skip that particular step or something.[IMG="screen"]http://i.imgur.com/ynZYRVK.png[/IMG]