1) Backup your System first
(Needed)
2) Now download this file here -
Download (update.zip)
3) Now copy update.zip file to the
SD Card. Do Not put it in any folder.
It ain't work.
4) Turn Off your Device and go to
Recovery Mode By Pressing and
Holding this Key Combination
Volume Up + Home Button +
Power Button.
5) Once you entered into the
Recovery Mode. You will see the Blue
Color User Interface where you
can't use Touchscreen. Instead use
" Volume Up and Volume Down to move
Up and Down". And "Home Button to
Select". And "Power Button used to
go Back"
7) After that select "Apply Update
from SDCard" option and choose
"update.zip".
8) Once Patching was successful. You
have to Reboot your Phone by select
" Reboot System Now".
9) Navigate to Menu, If you find
" SuperUser" in your app menu.
Vola!!!! You're successfully Rooted
your Galaxy y.

Hope it work for you

+-------------------------------------------+

Sincerely,
Eirma SyaQieLa