@DDUJ It could be a firmware issue but more likely the MOSFET has failed, you would require a volt meter to check the controller outputs. If the D11 output on the Nano is working and the MOSFET is not switching then you need to replace the MOSFET or get a new controller.
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@Hiram-be What version does it show in device manager? It needs to be version 2011 that is provided in T2Laser, then it should work unless you have some other USB issue. Make sure you reboot after install.