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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
Sorry this happened - it looks like somehow the firmware got corrupted during the update, but it's not too hard to fix.
Please can you follow the steps here: http://www.espruino.com/Firmware+Update#android-ios-app
You'll need to install a different iOS/Android app to update the firmware properly, but otherwise that should fix it