by Hard Reset
Before you buy a new cell phone or new tablet, please try the following procedure to repair your device. First charge your battery, backup your important data if possible and in most cases take out SIM and SD card before factory reset. It is impossible to recover your data after doing a hard reset, so online backup is always important. For all of your data, a backup should be done on an external device, hard drive, raid system or media. With or without insurance, if your cell phone lost, damaged or stolen at least your invaluable data is backed up in a safe place. If you are about to sell your phone and you want to wipe your personal data, or if your phone affected with virus you have to do a hard reset. In some cases, you can delete the forgotten password or lock pattern from your device as well. All information is for devices with stock based ROMs. If you are using rooted device, always back up your EFS folder first, containing your IMEI info, etc.!
Resetting LG KP500 Cookie
hard reset KP500 Cookie: With NO SIM inserted Enter 1809#*500# > then select RESET
Setting > Phone settings > Reset settings Enter default phone code 0000
You can use LG Phone software update tool to update your LG KP500 phone firmware if supported.
If your LG KP500 frozen just take out battery and reinsert it.