A couple of debug steps -
- VDD Select Switch SW5 should be in the middle position (3.3V)
- Switch SW7 (back of the Kit) should be VDDD/KitProg2
- Power monitor jumper J8 needs to be connected.
- KitProg3 should be in BULK mode. You get find information regarding the KitProg3 LED status here - KitProg3 User Guide
If this does not help, please share the screenshot of PSoC Programmer when you try to program the device.
Thanks and Regards,
Rakshith M B
Thanks man, it seems to work now. It must have been SW7 which all by itself decided to slide all the way to the other side!