For closed source systems detailed changelog is very nice. "Fixed USB reset issues" is close to useless, when you try the new firmware and it still exhibits USB

For closed source systems detailed changelog is very nice. "Fixed USB reset issues" is close to useless, when you try the new firmware and it still exhibits USB reset issues. More detail the better. And describing the actual changes ("increased XYZ timeout on USB resume") instead of symptoms they tried to address ("we fixed the USB reset" - not) is actually much better.