No one has been able to.
I believe we lack the knowledge or software to access that area.
Better people than us have tried.
Even when they had the right info for the S, it took them a while to figure out how to work with it. We don't even have as much info as they had and our phone is locked down even more.
I know you guys want to help and are throwing around suggestions, but beleive Squid and me, a few have been down this path, it's way beyond what we can do. Squid has been experimenting with one of these for over a month now. There is nothing in this part of the forum that will help fix it. NOTHING. Very experienced programmers have tried and failed. Thinking you can just flash a simple file has long since passed.
Simply put, the phone is toast.
LG is probably the only people who can fix it.