Jetson Nano and SPI CAN Bus

Ok connecting 19/21 and running again RX echoed TX. So that is good.
Also looking around the forums I found out that INTerupt should be connected to GPIO_PZ0, Pin 31. Correct?
I also found this post that I am trying Jetson nano and mcp2515 can module - #229 by shgarg post. After downloading attached zip file I did followed to step 8 when I get error saving. I did not rename any files and I did not copy b00 file in zip file. I see another person also has same issue as I do.
Please advise on fix related to link I provided or new steps I should follow.

NVIDIA Jetson Nano (Developer Kit Version)
L4T 32.4.4 [ JetPack UNKNOWN ]
Ubuntu 18.04.5 LTS
Kernel Version: 4.9.140-tegra
CUDA 10.2.89
CUDA Architecture: 5.3
OpenCV version: 4.1.1
OpenCV Cuda: NO
CUDNN: 8.0.0.180
TensorRT: 7.1.3.0
Vision Works: 1.6.0.501
VPI: 0.4.4

Thank you