When my bb 8520 tries to start appears an error 523 message

Sometimes it helps to upgrade your OS ...from say (a)4.2.0.442 to say (b)5.0.0.1015. I was getting tons of uncaught applications on my 9550.I upgraded from (a) to (b) and the problem is gone.Along with battery issues.Can you try that?Your carrier must have OS upgrades for your device on their website.Good luck!

System process died A critical Java process has terminated, and the device cannot continue to operate in a normal manner.
You will need to wipe you handset and re install the software

try this... plug in ur celfone in pc. run blackberry deskstop sorftware. click organizer.check calendar/memo/address book/task. then click configuring... step by step update online...

my blackberry curve 8520 is showin uncaught expectation 8 >= 8 cant text as my message bix has disapeared

i have the same problem the phone was working fine on sunday i charged the battery and after the reboot the error message appeared. I

just wipe it or reload with the new updated OS

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.

i have the same problem, what did you do to fix it?

app error 523 blackberry verizon

I got error code 523 after did the device software upgrading. Please advise. tks