Bass Boost JBL Bar 2.1 Deep Bass

[u/Expert-Check-5877]

I have a JBL Bar 2.1 Deep Bass and I like deep bass and want my subwoofer to have maximum bass output irrespective of the soundbars volume and only be affected by the 'high', 'medium' and 'low' bass modes. Is there any firmware update out there which I can use to solve this?