I hate to break the news to you, but while that programmer is correct for the older MCUs like almost any Anduril or Narsil light to date, that is NOT what you need for the SP10 Pro.
You’ll want a USB to Serial TTL adapter like these (just one though). And you’ll need to merge the TX and RX pins using a Schottky Diode (preferred) or a ~4700 Ohm resistor as shown here
I feel like I’ve written about this a lot, I’m sorry if this is the first time you’re reading it.
As far as software goes, you’ll want to make sure you have Python installed with Pip (the python package installer). Pip is used to install the pymcuprog package which is what you’ll actually use to do the flashing.
Additional info here