Emax

according to this...
http://www.silveriafamily.com/emax/emax_repair.html

SE: Upgrading an Emax or Emax HD to SE is not as simple as getting a 
copy of the correct SE OS. Before the Emax can use a SE OS it must 
first have the SE Upgrade disk ran on it. For a long time this was 
thought to no longer be possible. The SE Upgrade disk is a self-
corrupting installation disk that updates a special EEPROM inside the 
Emax. After running it the Upgrade portion is corrupted, but the 
banks are left intact. Unfortunately E-mu accidentally destroyed the 
Mac that the information was stored in so not even they could create 
more disks. 

Fortunately, in February 2004 a list member named Carsten Ender 
notified us that he had managed to make an image of an unused SE 
Upgrade Disk with the EmaxUtil program available in the lists Files 
section, he uploaded the image there as well. It has been succesfully 
used by a fellow list member, midi_patchbay, who posted his 
instructions and gave me the permission reprint them here. I have 
modified his post to be more generic.

Theres no file for download on above site and the email address does 
not work