I have with me a Nokia6300. I have forgotten the security code I inserted in my cell phone. I was trying to set up a code for my phone so my keypad on my phone will not be unlocked when I have my cell-phone in my pocket. I tried other codes but it did not work along with putting different code numbers when the phone asked for a PUK Code. Please guide how do you unlock a cell phone. Or to refresh its software. If possible give a download link for its software. I’ll be grateful.