Device software for BlackBerry®

[lawhite7486]

I uninstalled BlackBerry Messenger (by deleting it on my handheld) after getting an error message when trying to open it. I have tried every suggestion given on these message boards to reinstall it and am having no luck. This is what I've tried:

Going to my Desktop Messenger and clicking on the Application Downloader button. The option to install Blackberry Messenger isn't there. There's no box for BBM. 

I Installed the latest software version and the BBM option on my Desktop Manager still isn't there. It didn't reappear on my phone either. 

When I go to blackberry.com/messenger, I get a message that say's it only available for versions 4.0 and higher, but i have a higher version. I have 5.0.

I've tried downloading it from my handheld and I get an error message that says my system does not meet the requirements to support BBM.

WHAT DO I DO???? How do I get BBM back on my phone??? Help! 

[tanzim]

Follow the below mentioned steps -

1. Connect your BlackBerry device via USB cable to the desktop/laptop.

2. Open Internet Explorer in your computer 

3. Go to address: http://na.blackberry.com/eng/services/devices/

3. Click on Update Now  button

4. click on Options button in Application Loader (popped up window) and look trough the list of available applications.

4. Select BlackBerry Messenger and continue