I assume if the headphone jack is Damage? Or it got wet?
If not then do a battery pull, wairt 30 second, see if it works.
Let me know if it will help you
Posted from my CrackBerry at wapforums.crackberry.com
I have tried as your instruction but it does not work.
The point is that I don't see "Activate Headset" like before, just "Activate Handset" and "Activate Speakerphone"
Well that's weird, you should be able to see the the messege, go to Media>> and then music and then properties, check your settings there. May be it will help ya. Goodluck.
Posted from my CrackBerry at wapforums.crackberry.com