Yamaha TX7 – Version 1.4 OS Firmware Update Upgrade Eprom for TX-7 FM Synth


SKU: FW-281 Category: Tags: , , ,


Yamaha TX-7 Firmware Upgrade Chip: 1.4

This is firmware revision 1.4 and is the latest official released operation system by Yamaha. This operation system update/upgrade requires one eprom chip as revealed in the  article`s photos and the chip will be labeled to help you locate the correct chip socket. For more info, please check below

To check your current OS version:

  • hold down the MODE NORMAL and DATA YES buttons while powering on the unit
  • The version will be displayed as shown in the photos, as TEST y/n ? v1.x
  • where x is your current version number
  • after viewing the number either turn the unit off or press the DATA NO button so you do not enter into the TEST mode.


Please see attached picture with service note.


  • Fully verified before shipping and professionally packaged in anti-static material
  • Yamaha TX-7 is not included, only this update/upgrade.
  • The existing EPROM is in a socket, so you can easily remove the old one and plug this one in.  No soldering is required.
  • Chip is located at IC-socket: IC 2
  • Most devices with serial number 10129 and up already have the newest OS.