Yamaha DX7 – Version 1.8 firmware OS Eprom Upgrade Update DX-7


SKU: FW-271 Category: Tags: , ,


Yamaha DX-7 OS update v 1.8 – Final Revision

This is firmware update 1.8 and is the latest official released operation system by Yamaha before the Special Edition rom and is useful for users with Hcard as they cannot upgrade to the Special rom. This operation system update/upgrade requires one eprom chip.


There is nothing documented due to that Yamaha didn’t share this information for this device. We are only talking minor bug fixes to improve the midi sysex and general operation system stability.


  • Fully verified before shipping and professionally packaged in anti-static material.