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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.
@d3nd3-o0
Make sure your whitelist option in settings app is empty, I once forgot that I setup a whitelist for mac address. Also make sure programmable is true. Double check those settings under bluetooth inside your bangle. These problems are often something silly.
Also, you should try entering DFU targ mode and see if the NRF DFU app from play store can connect to it, I mean simulate a firmware update. This would test the hardware is working fine still.