Actually the .etlt model of FaceDect(actually detectent_v2 network) is a .uff file instead of .onnx file. So, after conversion, it is uff file.
So, for detectnet_v2 network, you can not convert ngc’s etlt file to onnx file.
You can download the .tlt model(note: not .etlt model) . Then use TAO 5.0 docker to export .tlt file to .onnx file.
Please refer to Cannot use TAO Deploy in Jetson AGX Orin - #5 by Morganh.