Testing new iOS backend

I did a quick online search but I didn’t find any way to run arm simulator from x86 macs About running my game in my old iPhone 5S I’m also having issues, it looks like the minimum ios release to run libjglios apps is ios 15: NOTE: Xcode project 'LibJGLIOSProvisioningProbe' was written by a newer Xcode version (56) -- temporarily downgrading it (without modifying project file) xcodebuild: error: The run destination iPhone de Jesus is not valid for Running the scheme 'LibJGLIOSProvisioningProbe'. iPhone de Jesus’s iOS 12.5.7 doesn’t match LibJGLIOSProvisioningProbe.app’s iOS 15.0 deployment target. Upgrade iPhone de Jesus’s iOS version or lower LibJGLIOSProvisioningProbe.app’s deployment target. How could I lower deployment target? (if possible)