How to convert RNN/LSTM models using the mtk converter?

NeuroPilot NeuroPilot - Analytical AI
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Hi everyone,
I’d like to ask if the mtk converter in the NeuroPilot SDK supports converting RNN/LSTM models to TFLite.

I’ve successfully converted an RNN/LSTM model (pb file) trained using TensorFlow into TFLite using tf.lite.TFLiteConverter(the official TensorFlow Python API).
However, when I try to convert the same models using the mtk converter, I encounter the following error:
RuntimeError: Cannot import the following TensorFlow operators: RandomStandardNormal, TensorListFromTensor, TensorListGetItem, TensorListReserve, TensorListSetItem, TensorListStack.

How can this be resolved? Also, when using the MTK converter to convert RNN/LSTM models, is there a restriction on the framework used to train the model?
For example, is it limited to PyTorch or TensorFlow?

Thanks!