via this auction
"The KiwiSix Upgrade was installed by a professional technician and features:- 
• A complete replacement board for the troubled Korg Polysix KLM-367 circuit board. These are usually battery damaged which can be difficult and expensive to repair and render the synth unusable. • 1024 Tones can be stored and edited. It is also possible to temporarily edit any Tone. Tones are selected using a two button system. The first button selects the high digit (bank 1-8) and the second button the low digit (Tone 1- 8). This allows 64 tones (1-1 to 8-8) on any bank group. There are 16 bank groups that are selected using the A-D bank buttons.









































