QUOTE(myfranco @ Apr 14 2007, 02:28 PM)

smanaton first flash ms25 back to original firmware.Open both dvddrives and you will see the mainboards.There are 4 cables plugged into the mainboard.Gently,take those cables off(of ms25 and ms28).You'll have the motherboard on your hands.Take ms28's mobo and put ms25 mobo into the dvd drive.When it comes to select extreme primary master,simply,swap it with ms28 mobo and hit the option.Hope it works.Good luck.
You don't need to swap boards to flash a bricked MS25 or MS28 drive.
If the 10second trick does not work, you can try the above mention, but it rarely helps,
and you don't need to switch all the cables, you can flash a bare board with no laser,
motor plugged in.
If still having problems, the last thing that could be wrong is the EliteMT cache RAM chip.
This chip fails very easy under power-stress, static-charge, power-glitch, and since this
what happen in the first place, I am more than sure the problem is the "EliteMT" RAM chip.
To test if this chip is causing the reading/flashing to halt, open the drive, power up the drive,
and put your finger on the chip marked "EliteMT", if it becomes very hot within 3 to 5 seconds,
then it is TOAST/DEAD/SHORTEN and that is why you can't read/write even with the 10second trick.
If you have no copy of the "drive key", then you need to remove the dead "EliteMT" chip,
and you will be able to dump the firmware with no problems.