lg gt 450 pattern lock : need solution

[mahzra azra]

lg gt 450 pattern lock . need solution ugent.

[K.I.K]

Try this procedure
Follow this easy steps
1) Start your phone [phone must be started with or without sim]
2) Press volume up button + home button + search button
[Location of volume up button is on right side, location for home button is on bottom middle button of home screen and search button is right side of phone above camera button]
3) Keep all those button pressed at the same time for 5 second
4) Phone will ask you for " Are you sure you want to factory reset?"
5) Press yes and wait for 1 minute, Phone will hang first and than restart after sometime.
6) You've done resetting your GT540 successfully

[mahzra azra]

I removed pattern lock.after pattern lock i used this mobile 3 or 4 hours.later it hang on logo it self.
Now tell me that have i to flash it??
If yes then how to??????
If no how to solve it???