> They don't work at all? How the heck did something that important get past testing?

Because that's how all hardware is; I complained about this sort of thing a few days ago: https://news.ycombinator.com/item?id=43202090

> Guess I'm not moving on from the RP2040 anytime soon...

Doesn't matter what you move to, there's still going to be 2000 pages of datasheets+errata, and one line in the middle of all of that will tell you "This does not work".

That's why for hobbyists it's best to stick to devices with a large community around them, who surface niche problems in community forums.

However, with everyone moving to Discord, this will no longer be useful too...

Yeah, it's an A0 flaw. Word on the streets is that it was from modifying the pads to be 5V tolerant.

Do later steppings have this issue fixed? Or will they not fix it for backward compatibility?