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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.
@Gordon
Yes, absolutely. It's just a matter of flashing the hex file for the version you want back over. If you're after a particular version drop me an email and I'll send it over.
However you may also be able to flash the radio test over the air by DFU (in which case you can just flash back by DFU too) I'm not 100% sure if it'll work, but maybe give the attached a try!
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