I have an app error 523 ive reset it and it dont work

Hi, On the BlackBerry smartphone, the 523 app. error Reset error message appears after pressing the Mute button, accessing an application, or performing a hard 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. Note: The BlackBerry smartphone will not show a Connected state in the BlackBerry Desktop Manager. Proceed to open and run the application loader tool. If BlackBerry Desktop Manager cannot connect to the BlackBerry smartphone, perform the following steps: 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. I Hope it helped you. Thank you for using ' Fixya ' and have a nice day!!

Hi, To resolve tis issue first perform a hard reset.
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
To do a clean installation of the BlackBerry Device Software using 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.
To Dowload desktop manager latest version please go to blackberry.com, I hope this information will be helfull to you