Download and install the latest version of BlackBerry Device Software on the BlackBerry smartphone by following these steps:-
If you are running BlackBerry Device Software version 4.1, complete the following steps:
1)Complete one of the following, depending on the network on which the BlackBerry smartphone is operating:
a) For BlackBerry smartphones operating on a Code Division Multiple Access (CDMA) network, contact your service provider and have the BlackBerry Internet Service Browsing deactivated.
b) For BlackBerry smartphones operating on a Global System for Mobile Communications (GSM), remove the Subscriber Identity Module (SIM) card from the BlackBerry smartphone.
2) Perform a hard reset on the BlackBerry smartphone.( remove the battery and the simcard reinsert it after few minutes).
3) Turn the wireless transceiver off.
4) Click the Browser icon.
5) Expand the Browser Channels folder.
6) Highlight a third-party browser push channel.
7) Display the menu and click Delete Channel.
8) Repeat steps 7 and 8 for each third-party browser push channel.
9) Complete one of the following, depending on the network on which the BlackBerry smartphone is operating:-
a) For BlackBerry smartphones operating on a CDMA network, contact your wireless service provider and have the BlackBerry Internet Service Browsing activated.
b) For BlackBerry smartphones operating on a GSM network, reinsert the SIM card.
10) turn on the wireless transceiver.
11) register the BlackBerry smartphone on the wireless network.
12) subscribe to the third-party browser push channels again.
BlackBerry Device Software version 4.2.2
Change the theme on the BlackBerry smartphone to one other than the Today theme by completing the following steps:
1) From the Home screen on the BlackBerry smartphone, select Options.
2) Select Theme.
3) Select any theme that is not the Today theme.
4) Display the menu and select Activate.
SOURCE: app error 523 reset
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.
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