But you do understand the methods for dumping the current system bios from the SPI on the motherboard, right? You did located the (33) jumper… do you have already dump?
Have you ever done similar action? Do you know the Intel CSME tools? In your case version v11
Im sorry but if you cant reproduce your issues or explain your main difficulties… it’s hard for any user to help, just reading your words “I am failing to understand and to be able to follow it”…you need to be a little more specific…