Yamaha DX7IID/FD Firmware v. 1.9 Latest OS EPROM Update Upgrade DX7II MK2


SKU: FW-272 Category: Tags: , , , ,


Yamaha DX-7IIID/FD firmware OS upgrade: Version 1.9

This is firmware update version 1.9 and is the latest know released operation system by Yamaha in 1988. This operation system update/upgrade requires one eprom chip.


The OS 1.9 update provides bug fixes related to midi communication, velocity, system code issues etc.


  • Fully verified before shipping and professionally packaged in anti-static material.
  • The IC socket is located at IC23