|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:
Please see attached picture with service note.