having to do a firmware update on my soldering iron
You don’t. It works perfectly fine OOTB. Can’t speak for the Pinecil v2 with Bluetooth and the companion app but I have v1 and the software been stable and bug-free enough I’ve never even given a thought to updating the firmware on it
If you’re on android I can highly recommend Eternity. Open source and a fork of Infinity for Reddit; which is still going as a paid service post Reddit API débâcle. I loved Infinity prior to Reddit being a bitch and Eternity is just as great