My blackberry have apperror 523 reset - Blackberry Curve 8350i

Try the fixes from here: http://forums.crackberry.com/blackberry-pearl-8100-f5/error-523-reset-1831/

https://www.youtube.com/watch?v=f7amtjIROzM

1) Make sure you have Blackberry Desktop Manager installed.
http://na.blackberry.com/eng/services/desktop/
2) On your PC, go to Start > Run and copy and paste the following line exactly (meaning with the quotation marks):

"c:\program files\common files\research in motion\apploader\loader.exe" /nojvm

3) The Application Loader Wizard will appear -- click "Next."
4) In the "Connection:" drop-down menu, you should see "USB-PIN: UNKNOWN". Click the "Next" button.
5) You should then see a list of applications ready to be installed for your Blackberry. 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.

NOTE: If you do not see a list of applications mentioned in step 5 and instead see the message "The Blackberry Desktop Software does not have Blackberry Device Software for the device that you have connected to the computer. Contact your wireless service provider or system administrator," then you must download Blackberry's Operating System for your carrier and device.
http://www.blackberryfaq.com/index.php/BlackBerry_Operating_System_Downloads
Just select the appropriate carrier and network type, select your Blackberry model from the list and download the latest version. Install this download and follow the above steps again and you should be on the right path.


Additional information:
http://www.blackberry.com/btsc/KB24395 "Error 523", "App Error 523", or "JVM 523" appears on the BlackBerry smartphone

Article ID: http://www.blackberry.com/btsc/KB10144
KB10144 How to force the detection of the BlackBerry smartphone using Application Loader

I got that from: http://supportforums.blackberry.com/t5/BlackBerry-Curve/App-error-523-reset/td-p/1743575

just restore it with blackberry desktop manager

my blackberry 8520 handset problam error code 523 pls solve this problam

try a factory reset:

How to reset BlackBerry Curve 8520 to factory settings: Press the BlackBerry key, Go To Options > Security Options > General Settings > Menu > Wipe Handheld > Scroll to Continue, press the Trackpad. it will reset your BlackBerry 8520 quickly.

app error 523 blackberry verizon

I had this same problem it was from a third party application that I had downloaded. Go to blackberry.com, and select support and search your APP error it will walk you through a guide on getting it fixed--although your phone will reset back to default.

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, the BlackBerry Device software will have to be reloaded.

Note: The BlackBerry smartphone will not show a Connected state in the BlackBerry Desktop Manager. Please proceed to open and run the Application Loader.

how can i fix error 523 on a blackberry 8830