I bought a Pinecil so I could run it off a battery. I really came to appreciate the excellent temperature control and rapid heating, and use it instead of my soldering station for jobs away from the bench.

I have felt absolutely no need to touch the firmware. I try to forget that it is more powerful than my first three personal computers combined. Plug in, turn on, get hot. It meets my needs and exceeded my expectations. I suppose I could run a website from it if I wanted to make a point but as long as it doesn't require wifi and phone home to verify the license and leak my biometric data I expect to use it until I wear it out.