That’s a misunderstanding. I don’t need your firmware or want to have it. That was just an offer.
For the moment it seems so, yes.
How would I know what to do without having a look into the dump?
You’re a new member of the forum and you will most probably disappear when your own problem is solved.
You’re not even willing to share your firmware so that it might become a teaching example for you and others in the forum- compare to the first link posted.
So why should I invest time in ‘teaching’ you?
Here are some links within the forum where NVRAM got edited, but there are differences regarding different types / different structure of NVRAM and your NVRAM might not have the same structure. But you should have found these already…