Backup your Stock Rom on galaxy y gts5360 using cwm without root

1) Firstly downlaod cwm zip, just search it
"download cwm.zip for galaxy y".
2) Now put the cwm.zip on root of sdcard
not in any folder.
3)Go to recovery mode by pressing volume
up + home key +power button together.
4) In recovery mode, touch is not
available. ..so use up or down to navigate,
Home key to select and power key to go
back.
5) Now select apply update from sdcard and
choose ur cwm.zip.
6) Now u entered in clockwork mod.....now
choose backup and restore...and then click
on backup.
7) That's sit , now wait a minute to backup
ur rom.
WITHOUT ROOT