Operating System EPROMs
These EPROM chips will update the firmware in your keyboard to the latest version. The two EPROMs are user
installable, and come with complete instructions. The pricing below requires the trade-in of your old chips; a
$10.00 chip charge is added to all EPROM orders, and this fee will be refunded upon return of the old chips.
We do not sell the chips for the ESQ-m; the latest firmware version for it is 1.20.
To determine the version in your ESQ-1 or SQ-80, press the Record button, and while holding it down, press the
Master button. The bottom line of the display will say "SOFTWARE VERSION x.xx". Note that ESQ-1's with software
earlier than version 2.30 will install BRASS1 in all 40 internal sound locations after the keyboard is reinitialized;
this alone is an excellent reason to upgrade the firmware. Reinitializing with the latest firmware reintalls the
40 factory internal programs.
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