Nokia 6500 slide hard resetRestore factory settings Select Menu > Settings > Rest. factory sett. to reset some of the menu settings to their original values. Enter the security code.
The default lock code is 12345.
If it is not working try this code:
You can format your device by typing *#7370# in standby mode. Before the device is reset, you need to provide the lock code. The default lock code is 12345.
Normal Reset: type *#7780#
Firmware update: Select Menu > Settings > Phone > Phone update
Formatting the device will permanently erase all user data and settings as well as add-on applications and operator specific settings.