If your blackberry device is showing either the white screen of death with the message JVM error/App error 523, 102, 507 or 545 it simply means the BlackBerry smartphone encountered a Java Virtual Machine (JVM) application related problem and is unable to continue running.
When you see that solid white screen with the error message JVM error/App error 523, 102, 507 or 545, first thing to do is to perform a battery pull, if no joy you can try the error fix for JVM Error 102 here which fixes the error without you losing your data.
If all fails then you are left with the last resort which is 100% guarantee to work for any of the above blackberry errors but you will lose your data, so it is always advised to perform blackberry backup.
Now navigate to the following directory C:\program files\common files\Research in Motion\AppLoader look for a file named vendor.xml, delete it.
In the same directory (C:\program files\common files\Research in Motion\AppLoader) look for a file named loader.exe run it click next and select your PIN as detected device.
You should then see a list of applications ready to be installed for your Blackberry, tick to select your choice. Hit Next and Finish and you are well on your way to getting your Blackberry back to life.
Congrats! Just don’t disconnect anything and let the lengthy process finish completely, your Blackberry should restart and will run perfectly afterward.