This is the solution for anyone have mep code 0 left in his handset that no attemt balance for enter code
1.please install black berry desktop manager. (its free download from black berry website)
2.connect handset with pc.
3.open this software its shows booting rom and ask u phone unlock code(note: its not asking mep code just user code).if not phone code inserted then it update rom automatically.
4.now your handset reboot,
then you got mep code(10 left) in network lock section.
thank u.
[ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذا الرابط] 
الرئيسية 
