GUYS,i have a samsung SGH M200 mobile and while unlocking my phones password i was introduced to a new code #*7337# which unlocked my password but after that my phone doesnot show any networks.i searched on net and probably found NAND part of phones software was deleted,which is causing this problem.i took it to service centre but yet still couldnot find a solution for it.help me to undo this reset manually or a solution to fix this problem.