I read the file, cleaned the password out, wrote it back and now I don't get anything but the cooling fan running slowly for 10 seconds then stops for 5 seconds and repeats. I wrote the original bin back to the system, same results. Both files will write and verify.
All I can tell you to do is either try my instructions as before and turn it off and on repeatedly with power connected and then with power disconnected. I have found I have had to do this on a few Airs; or you can replace the chip completely.
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