Need Help!Looking for "Matshita UJ-840D" region code free firmware

Hi

Does any one know where can download new firmware that support region code free for this “Matshita UJ-840D” drive??I want to watch other region code DVD but this drive can’t read and it need to changed drive region code setting (i changed once already,now remain 3 times to changed).I have try to installed region code free software it doesn’t work (software like AnyDVD,region code kill,DVD43 and etc…).
Hope this forum can help me to solve the problem.Thank a lot…
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No. This is not possible.

i found this oem version but i don’t think it s what you are looking for

http://www.techzilla.info/uploads/MatshitaOEM.rar