Also, I have tried every recommendation from "Powering off" to "Deleting Apps" in the link that you sent, and nothing helped at all / could not work (throws errors)
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.
Have any of the reset attempts been tried and what are the results of each?