[GUIDE]how to root samsung galaxy y or some android phones
1.download from attachment the update.zip and move to the root of sdcard
2. boot your android phone to recovery mode by holding 3 buttons volume up + home + power button
3.select apply update from sd card
4.select the zip that you have downloaded a while ago
5. after installing reboot your phone.
6.go to the app drawer and you cansee that theres a superuser application