I am away?

I use both for different purposes. Gentoo’s feature flags are the reason I wait for compiles, but only for computers a touch the keyboard with. Everything else gets Arch.

Certainly looks like UPDI pads. I have update the firmware on other kinds of flashlights with similar pads. You can try to connect with a test command without trying to reflash. Here is a lot of information on the topic: https://budgetlightforum.com/t/anduril-flashlight-reflash-reference/216942

I thought it was 231231

Yes, and very rarely, I have to pacman -S archlinux-keyring after it complains about keys and run it again.