[CoolMichael]

Dear BB friends and helpers!

I urgently require your help. I have seen some similar topics posted but none exactly the same as mine so I would really really appreciate if anyone can very kindly help me out.

I have a major problem on the Blackberry Bold 9900.

A few days ago I updated my Blackberry Messanger (BBM only) to BBM7. Everything was working fine.
Then last night I got a message on my phone to upgrade my operating system to OS 7 which I installed.
Then this morning I noticed that my BBM has disappeared from my phone and I can't find it.
I currently have 7.1.0 Bundle 2061

(Also note that BB App world wont give me the option to download BBM and trying to download other apps also freezes the app world)

I have already tried

1) Hard reset / battery pull
and
2) Doing a universal search and looking for hidden icons.

I have seen a few other similar topics but I wanted to ask what I should do... :

1) Re-install BBM7 from a link from this forum? or
2) Downgrade OS7 to OS 6 via Options - Software Updates - Downgrade?

Or any other options?

The KEY thing is that I do not lose my BBM contacts! That is the end goal of whatever is recommended. I really hope someone can help.

Many thanks in advance,

Kind Regards,
Michael