Make your back and menu soft keys vibrate !!!

many a times you would have come across some smartphones which give a short vibration feedback when their soft keys ( here 'back' and 'menu' ) are touched . today i am posting one such way to do it in your SGY !!!!!
NOTE - THIS IS ONLY FOR ADVANCED USERS WHO ARE CONFIDENT ENOUGH TO HANDLE AND MODIFY ROOT DIRECTORY FILES WITHOUT BRICKING THE PHONE . I WILL NOT BE RESPONSIBLE FOR ANY KIND OF DAMAGE OR MALFUNCTION OCCURRING TO YOUR PHONE . I RECOMMEND BACKING UP YOUR PHONE WITH CWM BEFORE TRYING THIS

now lets begin -

follow these steps very carefully 

1) download root browser link  

2) install and open root browser

3) now go to ' system/usr/keylayout/**here** '

4) here you will find a file named ' qwerty.kl '

5) above , there will be a option ' mount r/w ' , select it before proceeding ( this will make the system       writeble for the changes to take effect )

6) now open ' qwerty.kl ' as a text file 

7) Now find & change these original values to the bold text below:

+ Change “KEY 158 BACK VIRTUAL“
+ Change “KEY 229 MENU VIRTUAL“
+ Change “KEY 139 MENU VIRTUAL“
+ Change “KEY 59 MENU VIRTUAL“

(u will find these fields within the text)

(initially these values will be WAKE_DROPPED ..... like ' KEY 158 BACK WAKE_DROPPED , so you have to change the values from WAKE_DROPPED to 'VIRTUAL' )

now you are done , save the changes in the text file and wait till the superuser access is granted ......... after that reboot your phone and enjoy !!!