for firmware upgrading you can use:
curl -sS get.pimoroni.com/flotilla | bash... note that https://github.com/pimoroni/flotilla is not quite ready for public consumption. It might work but it's a new repo we are currently working on, and that will be accessed by the existing 'rockpool' installer once the full switch is done.
Still, no harm done, but you're one step ahead of us, just want to manage expectations with what might happen in the interim.