How to get firamath used with \boldsymbol and/or \bm about firamath HOT 3 CLOSED

\documentclass{beamer}
\usetheme{CambridgeUS}

\usepackage{unicode-math}
\setsansfont{FiraSans-Regular.otf}
\setmathfont{FiraMath-Regular.otf}
\unimathsetup{math-style=ISO, bold-style=ISO, mathrm=sym}

\begin{document}
\begin{frame}{Frame Title}
\[ \iiint \nabla\cdot\symbf{A}\,\symrm{d}V = \oiint \symbf{A}\,\symrm{d}\symbf{S} \]
\end{frame}
\end{document}

\setmathfont{XITS Math}[range={\mathscr,\mathbfscr}]
\setmathfont{XITS Math}[range={\mathcal,\mathbfcal},StylisticSet=1]