BlackBerry App World icon missing after upgrade v 4.0.0.63 0

RIM has realized the error or some BlackBerry Device does not support after yesterday's release BlackBerry App World v4.0.0.63. Some users are experiencing errors when upgrading appworld version.
Here is the error fix solution from RIM:Error may occur in BlackBerry Device:
- BlackBerry Torch 9800- BlackBerry Bold 9650- BlackBerry Bold 9700- BlackBerry Curve 9300 (3G)- BlackBerry Curve 9330 (3G)- BlackBerry 6- BlackBerry App World for BlackBerry smartphones 4.0.0.63
The problem occurs because of an error:
There are several possible errors occurred with your BlackBerry above:
1. BlackBerry App World for BlackBerry smartphones yet install.2. BlackBerry App World icon too hidden.3. BlackBerry smartphones have not restarted after upgrading the BlackBerry App World.4. Has updated BlackBerry App World v 4.0.0.63 for BlackBerry 6 smartphones are still using BlackBerry Device Software OS are low and do not support BlackBerry Appworld s4.0.0.63.
BlackBerry Appworld Error Fix Solution :
1. Fix: BlackBerry App World is not installed on the BlackBerry smartphone.
Solution:
Open the BlackBerry Browser on the BlackBerry smartphone.Browse to the page www.blackberry.com/appworld/download to download the latest version of the BlackBerry Appworld.Once downloaded, make sure BlackBerry App World on the move or found on your BlackBerry home screen.
2. Fix: The BlackBerry App World icon is hidden.
Solution:
On the BlackBerry home screen, press the BlackBerry menu and select Show All, and make sure ALL your homescreen panel.When the BlackBerry App World icon is not found, go to any folder on your homescreen and try to unhide / show all BlackBerry app icon.When the BlackBerry App World icon is still not found after check any / all folder, see the following:
3. Fix: The BlackBerry smartphone was not restarted after upgrading the BlackBerry App World. Solution:
Because you do not restart your BlackBerry after the install, turn off your BlackBerry smartphone.Disconnect the battery from the BlackBerry smartphone.Put back the battery and let it restart the BlackBerry smartphone. After restarting the BlackBerry appworld should have been available on the homescreen or other folder2. Check the second step.
4. Fix: BlackBerry App World was updated to 4.0.0.63 on a BlackBerry 6 smartphone with older BlackBerry Device Software
Perhaps BlackBerry Appworld 4,0.0.63 version is not supported by your BlackBerry OS.
Solution:
 For BlackBerry OS 6.0.0.706 installed and you and AppWorld Icon is not found, you are forced to downgrade BlackBerry AppWorld version 4.0.0.55.
Open the BlackBerry Browser on the BlackBerry smartphone.Browse to mobileapps.blackberry.com/devicesoftware/entry.do?Code = appworld3To download previous version 4.0.0.55 (downgrade), after download do not forget to restart the BlackBerry smartphone as a message to restart appears.Make sure that the BlackBerry App World has been found in the home screen.

- Download Official BlackBerry AppWorld v4.0.0.55 di website BlackBerry
- Download OTA BlackBerry AppWorld v4.0.0.55
Hopefully useful tips ..