After the first successful refresh, we will not be able to refresh and change the MAC again.
Check the document "ethernet-controller-i210-i211-faq.pdf" 2.15 / 2.24.
How to change "iNVM word address 0xA, bit 15 is set to 1b"?
Check the document "I211-Ethernet Controller-datasheet.pdf" 3.2.3, How to enable "SECURITY_EN"?
We have tried to pull pin12 down but the result is the same.
Sorry, after the Community update, the email disappeared.
After we try to replace nVIDIA NX with nVIDIA Jatson NANO processor, we can successfully flash (attached picture).