QUOTE(MASTERXOX @ Feb 20 2012, 09:16 AM)
So u trying to say use ms28 firmware with ms 25 key?
Yes thats correct, once a MS25 is flashed it becomes an MS28. This is what the error code means.
E66: DVD Drive Error - Dvd drive pairing failure: DVD model, or version does not match that of the version expected by the dashboard. OR the firmware version on the drive is older then the firmware version expected by the dashboard. Make sure the DVD drive is of the same version originally included with the console and that it is using either the original firmware included with the console or newer. if drive can eject, read, and write under windows but errors on console, replacing original firmware should fix issue.