Security Code Error!!!

Hi
actually i love to tell you that
my father bought nokia 5130 just two days before for me n i started experimenting with it.
n i also put security lock it worked well for nearly 2-3 hours i remembered the code.
but after this i tried to experment with the wrong codes n i found even the right code is not working .
oh my god i was just shattered n then i searched net n all like u have also done.

then now this will help you:
my mobile battery was low almost emply so i just switched it off n put it on the charger after 2 hours approx i approached it n i started it without any sim it would ask you want to open without sim first i rejected it then again after opening it i accepted it n immediately it asked to unlock in the security section i put the right code n it opened n i was so happy at that moment that i cannot express it!
u can imagine
well try it

or if you dont remember ur code than just put the mastercode after this whole procedure . i hope it will work!!

Remove ya battery wait 5 min..and fix it and power it...and try ya old security code....it works....

Shows code error eventhouh i enter the right code