Jetson Mate + Xavier NX module setup seems not going well


I’m setting up Jetson Xavier NX module installed on Jetson Mate following the getting start guide: Jetson Mate - Seeed Wiki .
The Xavier NX module does not come from any dev kit.

I’m in the step 11, flashing the module, but it is not going to end after hours.

The host machine is running Ubuntu 20.04.

It would be very helpful if someone could give me an advice.
Thank you.