Why my speaker not functioning after upgrade to 10.3.3?

I'm using BlackBerry Classic and suddenlyspeaker not functioning. Suspected after upggrade 10.3.3. How to down grade?

How do you update? OTA or did you use an autoloader? if it was OTA, you might wish to run the autoloader of 10.3.3 instead. - http://forums.crackberry.com/bb10-le...rchive-943672/ or do as BlackBerry says, and wait 24 hours to see if the issue sorts itself. - BlackBerry investigating device performance issues with BlackBerry 10.3.3 update | CrackBerry.com

Tq bla1ze