You referring to "amdvbflash -unlockrom 0" for instance? As stated in the OP, this did not solve the lockout. The unlock command seemed to have worked when i still had the card and executing this command ended with "Rom unlocked" or something like that. But the write lock was not affected by this. I had taken a look at all the other commands on offer, but i did not find thorough explanations for some of them and i felt not inclined to do more blind fumdling around without help/explanations what could be the issue at the time. For me it is rather academic at this point since i don't have the card anymore. But if anyone finds a definitive explanation and solution, i'd be sure interested!