[Q] error in mounting /data in s5830i.... plz help...

hiii....
i got in problem today with my samsung gt-s5830i...
it is rooted nd cwm installed...
i installed a lwp in it nd since then it is bricked..
i tried restoring backup from cwm but it says cant mount /data...
nd i tried mountin it through mount n storge but nothing worked.....
i also tried it through odin but phone wont go in download mode....
plz help me to revive it again....
seeking for help!!!
thanx!!!