I get app error 523 every time on my blackberry 8220 pearl flip display

On the BlackBerry smartphone, the following error message appears after pressing the Mute button, accessing an application, or performing a hard reset:
523 app. error. Reset.

To resolve this issue, first perform a hard reset.

A hard reset involves physically removing the battery from the smartphone and then reinserting it. To perform a hard reset, complete the following steps:
1) Remove the battery cover from the back of the BlackBerry smartphone.
2) Remove the battery, and then reinsert it after a few seconds.
3) Replace the battery cover.
If this does not resolve the issue, the BlackBerry® Device Software must be re-installed.

Before proceeding, make sure that the latest version of BlackBerry Device Software is installed on the desktop computer by completing the following steps:
To perform a clean installation of the BlackBerry Device Software using BlackBerry Desktop Manager 4.5 to 5.0, perform the following steps:

1. Open BlackBerry Desktop Manager.
2. Click Help.
3. Select About Desktop Manager.
4. Click the Device Software tab.
5. Verify that the BlackBerry Device Software displayed is the latest version currently available from the wireless service provider

1. Connect the BlackBerry smartphone to the computer and open BlackBerry Desktop Manager.
2. Double-click Application Loader.
3. Click Next to start the installation process.
4. Type your BlackBerry smartphone password, if prompted, and click OK.
5. Select the check boxes next to the names of the applications to be loaded, and then click Next.
6. Click Settings, and then select the check boxes beside Delete all application data and Erase all currently installed applications.
7. Clear the check box next to Backup up device data automatically during the installation process.
8. Click Ok > Next > Finish.
9. When the process has completed, the message The loading operation was successful will appear. Click Close to return to BlackBerry Desktop Manager.

1. Click Advanced , and then select the check boxes beside Erase all application data and Erase all currently installed applications
2. Click Next.
3. Select the check box next to Do not automatically backup the application data during the loading process (if prompted).
4. Clear the check box next to Backup and restore applications installed wirelessly (if prompted).
5. Click Next > Finish.

1. Remove the battery and run loader.exe from C:\Program files\Common Files\Research In Motion\AppLoader.
2. Remember to reinsert the battery after the loading operations begin.

Blackberry 8220 app erro