Install BlackBerry Messenger 5.0 via Desktop Manager
For those, who do not have browsing data plan and using the BlackBerry Messenger on Personal Email or Email only data plan, this files may help you upgrade your existing BlackBerry Messenger. If you are using the BlackBerry device software 4.5+ and have the previous version of BlackBerry Messenger then you should get the prompt to upgrade but if that is timing out in the browser or not going through try following alx/cod files and install it through BlackBerry Desktop Manger.
If you are already using the leaked version of BBM 5.0 then you may have to delete it first from Option-Advanced Options-Applications-BBM5.0-Menu-Delete.
After installing, you may find the BBM icon missing but you do see the BBM installed in Options-Advanced Options-Applications list. In this case, you may want to delete the BBM 5.0 and install it again. You may have to do this couple of times to get it right.
Note: It is strongly recommended that you take the Back Up first before installing. If you have the leaked BBM 5.0 version then take the Back Up of all user data and BBM 5.0 contacts.
Download: BBM 5.0 Alx/Cod files via Megaupload
If you are able to upgrade the BlackBerry Messenger through above files, then kindly leave your device model and OS version in the comment below.