BusinessObjects Board

BO/BODS Upgrade - help needed

Hi all, we are about to do an upgrade from a 4.2 BO/BODS deployment to 4.3. I’m fairly confident about the BO part but have no clue about how to go about upgrading BODS and haven’t managed to find any proper guides online. It will be on a new server. Does anyone have any tips?
Thanks in advance.