| salam to all mere pass nokia ka mobile hai N95 main is mai application instal karta hon tu is mai aik error atah hai woh yeh certificate error aur ceritficate expired kuch mobile ka date aage pechee karne se chal jate hai aur kuch nahi tu jo application error daite hai in k new certificate sign karna hota hai tu muje kohi yeh bata sakta hai k yeh application sign kaha se hote hai |