Blackberry 8310 app error 523

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

i have 8520 and i cant get rid of app 523 error

To remove Blackberry App Error 523, try the following steps :

1. Uninstall all applications from your Blackberry Curve that you must have recently installed .

2. Download and Install the latest version of BlackBerry Device Software from your Blackberry Curve 8310 from official download site.

you need to wipe the device with JL commander and reload the software using desktop manager

Try to reload the OS...will probably fix it.

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.

You can try a soft reset, hold down left ALT, right Shift and delete simultaneously for a couple of seconds.

If that isn't working or you don't get the timing right. You can try resetting by turning the device off, remove the baterry for 1 minute or so, reinsert and turn the device on.

The error should have disappeared, if not let me know any other issues you may have noticed.