There are certain TFLite models, which when executed against standard TFLite benchmark model using stable delegate fail with the error “BAD_NEURON”
Though an unsupported op should fallback directly to CPU, seeing this error means that the op, in general is supported on NPU, but the version of the op in the model is unsupported.
For example, NPU supports ‘MEAN’ op upto a Rank of 4.
But if we try to execute a model which has 'MEAN" op but with a rank of 5, the execution errors out, though it should fallback to CPU (similar to TFLite GPU delegate, where supported ops with unsupported constraints fallback to CPU).