EPROM Type: 27256

Oberheim OB8MK MIDI Retrofit Version C2
The OB8MK can now send sysex from a remote request.
The command to send is: F0 00 00 2F 04 02 F7

Also added is the ability to receive the Oberheim data from original MIDI retrofits. 
(using the original Oberheim factory sysex ID)
 

-http://www.encoreelectronics.com/