Yamaha TX81z OS version 1.6 EPROM Firmware Upgrade KIT / ROM Update Chip

Yamaha TX81Z OS 1.6 EPROM Firmware Upgrade KIT / ROM Update Chip

Upgrade your Yamaha TX81Z with the final official firmware OS version 1.6 for improved stability and performance.

• One brand new EPROM chip programmed with Yamaha TX81Z OS 1.6 firmware.
• Chip is clearly labeled for correct installation.
• Shipped in ESD-safe packaging with printed installation instructions and ESD handling tips included.

Please note: This listing is for the EPROM upgrade chip only. The Yamaha TX81Z unit is not included.

Why Upgrade to OS 1.6?

• Final official firmware release by Yamaha for the TX81Z.
• Improves overall stability and fixes known issues to enhance performance.

New Features and Bug Fixes (Version 1.5 to 1.6)

• Fixed: Corrected data handling for performance initialization to avoid occasional data corruption during patch loading.
• Fixed: Resolved MIDI note-off and system exclusive timing issues to improve external MIDI responsiveness.
• Fixed: Improved memory management when updating internal parameters to prevent unintended parameter resets.
• Fixed: Addressed rare crashes caused by specific parameter combinations during performance editing.
• Fixed: Enhanced compatibility with SysEx editors and dump utilities for more reliable data exchange.

How to Check Your Current Firmware Version

• With your TX81Z powered off, hold both Left and Right cursor buttons and turn on the unit.
• The current ROM version will be displayed on the screen.

Installation Guidance

• Chips are shipped in ESD-safe packaging. Please follow standard ESD safety procedures during handling and installation.
• No soldering is required: carefully remove the existing EPROM and insert the new chip with the notch properly aligned as per instructions.
• Contact me before installation if you need help locating the EPROM socket or confirming chip orientation.

Helpful Notes

• Backing up any custom data before installing the upgrade is highly recommended.
• If you have compatibility or installation questions, please message prior to purchase.
• A service manual link is available upon request for your personal reference.

Quality & Guarantee

• Each EPROM chip is freshly programmed, individually tested, and shipped in ESD-safe packaging.
• Only new, high-quality components are supplied—never recycled or refurbished.

Availability

• Made to order; please allow time for meticulous programming, testing, and secure packaging before shipment.

Sales Policy

• All Sales Final: EPROM chips are sold new and tested. Returns cannot be accepted after shipment or installation. Once installed, EPROM chips become "used" and cannot be resold as new. This policy helps ensure every buyer receives a fully functional and reliable upgrade.
• Pre-Sale Support: Please message with any compatibility or installation questions before buying—I’m happy to help ensure you receive the correct upgrade.

All text and product description © 2025 Funkdewbie at Reverb. Unauthorized use prohibited. Only new, high-quality components are supplied—never refurbished or recycled.