you must install this version of the firmware:

firmware

please note that the display will show v42 after the update

To access the SPFX1 effects, press button 8 during power up

To access the stock ROM effects, power up as normal

The Synth Pro display will still display the same values as before, so it will not show the correct name of the SPFX1 effect selected or the parameter you are changing

table 2.jpg