• This upgrade version v4.10 is the latest OS firmware for the SD-1 [32 voice] synthesizer.
• Included will be 2 legitimately brand new ROM chips to complete the upgrade.

Please note SD-1 itself not for sale.Only the ROM update chips will be supplied.

• The EPROM set in this listing is only verified to be compatible with the 32-voice revision of the SD-1. If you happen to have an upgraded version of the VFX-SD to SD-1 synthesizer and are unsure if this upgrade is for you, simply send me a message and we’ll go from there.
• It is best that you verify the currently installed OS installed on your SD-1 as well:

-         Hold down the“Presets” button and press “Master”

-         You will beprompted with the ROM Version currently installed on your SD-1

-         Still unsure? Sendme a message.

• This version 4.10 upgrade is serves as a supplemental release, intended to iron out any remaining kinks affecting general stability, bugs and improve performance within the firmware code.

Protect your investment by purchasinghigh quality components:

ALLEPROM upgrade chips and components that I provide here are in fact brand new,high grade, recently manufactured and sourced directly from the manufacturer.This is the best way to ensure that the data integrity of your upgrades lastwell past our natural lifetime.

Any questions? Send me a message,thanks!

All EPROM upgrades I provide areprepared in an ESD-safe production environment and will be packaged in equallyESD-safe materials.