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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.
@Wilberforce
Which firmware are you using - the 512k combined?
Does the flash succeed?
If you use putty or similar you should see output on boot - set to 115200 baud. There might be some initial output at the start with a baudrate of 74880 if it's looping and resetting set to that rate to see what the messages are saying.