By default, when you power-on your Peak or Summit, it loads patch A000. To change the default patch: 

1. Select the patch you want to load by default on power-up 
2. Press 'Settings' followed by 'Save' (Protect will need to be turned off, found on page 1 of 'Settings') 
3. Power the unit on and off, the selected patch should still be loaded 

*Summit Only - when pressing 'Save' this will only apply to the currently selected Mode. This means you will need to repeat the steps for a Multi Patch if you would like a different Multi Patch loaded when you power-up the synth.