I think this is extremely unlikely, as I never never come across a microcontroller with flaky RAM.
But the most sensible way to test would be to just try on a second device. The chances of two being dodgy are unbelievably tiny.
@Gordon started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
I think this is extremely unlikely, as I never never come across a microcontroller with flaky RAM.
But the most sensible way to test would be to just try on a second device. The chances of two being dodgy are unbelievably tiny.