Blackberry 8520 app error 523 appears wen i turn on phone...same

SOURCE: how to fix blackberry 8520 app error 523

just wipe it or reload with the new updated OS

SOURCE: my blackberry 8520 cure app error 523...

1. Install the software Desktop Manager

2. Delete or rename the vendor.xml file, here: C:\Program Files\Common Files\Research In Motion\AppLoader

3. Open Desktop Manager

4. Connect Curve 8520

5. Doing this will force the pc to see the BlackBerry as new hardware, and thus force it to reload the Operating System
6. During the process, select YES to do a backup

7. The whole process should take about 1 hour

SOURCE: blackberry 8520 app error 523 appears wen i turn on phone...same

app error 523 blackberry verizon

SOURCE: Blackberry 8520 app error 523

Hi, app Error 523 is a software hiccup usually caused by a 3rd-party application that is not compatible with the BlackBerry device OS.

Follow the below steps to get rid of this error message:
1. Take the battery out and put it back in after 30 seconds or so
2. While the device is rebooting (or while the hourglass is still spinning), plug it into the PC
3. Then open the application loader and remove the 3rd-party application that's causing the issue
4. Worst-case is when you need to wipe the device using JL_Cmder.