You're not ever specifying -w so it isn't writing anything onto the chip - you're just comparing what's on the chip with the file you have (and it is failing!)
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.
You're not ever specifying
-w
so it isn't writing anything onto the chip - you're just comparing what's on the chip with the file you have (and it is failing!)