OK, so i seem to have killed one CD Burner.
The tray now stays open when windows boots, and the open/close button just switches the little LED on and off. If i shut the tray manually, it just comes straight back open.
It IS detected as a 8525B in Windows and the Bios, but i can't do much with it at the moment.
I HAD left a CD in the drive, while i was flashing, and i think this could have been a problem, so i am going to flash another 8526B to see if the same happens again..
If anyone has an easier/safer way to do this, i'll be only too happy to try.