Yamaha TX802 – Version 1.5 Update Upgrade Firmware OS for TX-802 FM Synthesizer


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Yamaha TX802 firmware OS Upgrade Version 1.5 – Final Revision

This is firmware revision 1.5 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.


The OS v1.5 upgrade provides bug fixes related to midi communication and system code issues.


The eprom is in socket, so you swap the current chip located at IC 6 with this one.


  • Fully verified before shipping and professionally packaged in anti-static material.
  • The Yamaha TX802 on the picture is not for sale 🙂
  • You can check current system by powering your device, while holding [9] and [8].