Maixpy3 tflite model convert

Do any one has the tool to convert a tfilte file to the two files used by maixpy3 (bin, param) ?
I have started working with Maix-II , and need to run custom neural networks, but until now I can’t find a utility or the specification to create the bin and param files.

By the way Maix-II have impressed me, i hope it will be the replacement for raspberry pi 4 in my AI+IOT projects.