BlackBerry® Curve™

[AidoriForEva]

I own a BlackBerry Curve 8520.
I bought it this May, and it has been working perfectly fine.
But yesterday, I'm not sure what happened, but a few apps disappeared.
the ones that disappeared are:

-BlackBerry Messenger
-BlackBerry Maps
-BlackBerry App world
-BlackBerry Application Center

The Show All option is on, my application list says they're there, and when I connect it to the PC, it says that i have those apps installed.

I tried BBM-ing myself using my friend's BlackBerry, and it definitely sends the message;it says delivered. But I can't see it, because I can't open BBM. It hasn't deleted, because my friends can still message me. Everything else is working perfectly fine. What could be wrong?

I also have an additional question.
I downloaded the newest OS from the BlackBerry website and ran the program, but when I open the Blackberry PC thing, it doesn't update. Why?

Also, I don't think my carrier is relevant to this question...so please don't ask me?

If YOU think it's relevant however, I guess I'll post it...DTAC THGSM

Thanks in advance...i guess

[John_Clark]

Well, carrier is indeed relevant.  Why is it such a secret? 

Follow the instructions (exactly) in the first post of this thread.  Pay no attention to the carrier you are downloading the OS from...it makes no difference.

http://www.blackberryforums.com/general-8500-series-discussion-gemini/227461-latest-os-8520-5-0-0-11...

Then simply reinstall those apps after the upgrade.

[AidoriForEva]

Thanks for the website and the directions...and it worked!!

at least.. I can bbm again~

but

I still don't have the App world and Application update and Maps...stuff

Same things as before, the application list says they're there...

I wonder why...

and i might be being annoying, but what is

'unlocking' your blackberry?

[John_Clark]

Just download those apps again, i.e. from www.blackberry con/appworld as sometimes the icons disappear after an update.

Unlocking allows your device to be used on another network, with another sim card.

[AidoriForEva]

oh my goodness thank you...i will try that...XDDD