After I installed the recent Sonar Platinum update via Command Center, my Sonar-Help-About box from within the Sonar product shows
"Version: 21.01.00 BUILD 37 - x64"
and my Command Center description with SONAR Platinum highlighted shows
"Braintree Update 1 (221.1.037)"
and my Sonar Platinum indicator in Command Center turned from yellow (before update) to green (after update).
Hope this information might help you navigate the update process through to completion. For the record, I first updated the top level Sonar entry in CC. That turned the top level indicator from yellow to green. But expanding the list of subcomponents showed multiple items still indicating yellow with update available. I went ahead and updated all components. By the end of the process, all the component indicators had turned from yellow to green.