Some time we have to face operating system problem in blackberry smartphones. Phone software not load properly and mobile got stuck or hang. Common error mobile shows on screen is www.bberror.com/bb10-0004. The error on screen similar as i mentioned above occur due to wrong operating system third party infected apps. Errors may be many types like Application Error or JVM Error 104, 507, 523, and the other for the BlackBerry OS 5-7 and www.bberror.com/bb10-0020, bb10-0015 and others for BlackBerry 10. Recover phone to its normal condition is little bit tricky. You need to upgrade your smartphone firmware to remove this error.
Remember all data on mobile memory will be deleted and not recoverable easily so keep in mind you have to lost your data in case of you update your phone firmware. There are many recovery software available these days to recover data from blackberry smartphones. But all data not recovered at all.
Download latest Blackberry Autoloader from Blackberry official website. Install blackberry blackberry desktop to install all drivers correctly. Run AutoLoader software.
Connect Blackberry phone with battery to your PC.
Auto Loader will connect your phone in Boot room Mode let it complete process.
After complete this process you need to upgrade your phone via WiFi or Blackberry Desktop software.