HOW TO USE ARDUPLANE Ver. 4.10 stable in SITL (Default is 4.2 Dev.).!?

Hello @Michael_Oborne and experts,
I use latest stable version of Mission Planner and I like it very much.
However I have problem when Using SITL, because by default it always load Firmware 4.2Dev. While in reality I currently use Plane Ver. 4.1.0 stable version., and I need to use FW 4.1 stable version to do Quadplane Simulation in SITL. Please help how to to this… Thank you.

Currently the only way is to build SITL yourself. More on that is here in the docs. SITL Simulator (Software in the Loop) — Dev documentation