Yes, you need a CREATOR Board.
@harry Good new: I finally was able to flash a new firmware. I did as you describe, just connected the dash via all JTAG cable + no battery. Baam - it work. I bet I did this before - apparently not. Weird.
Thanks for your help!
ah ok I see IRQ called once when pressing, but when I release button it's very bouncy - the IRC gets called up to 30 times, event value is either 2 or 1. I'll have to stabilize via software then...
you can refer below doc.
http://docs.rakwireless.com/en/RAK611/Software Development/How to use dashButton jtag pin as Digital IO.pdf
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