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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.
@allObjects
...just had this
PUnable to retrieve board information`` in a similar setup but connecting to a PICO and trying to flash... It was a malfunctioning / spotty connection... that lead to all kinds of issues... It found the device, but could not properly / continuously communicate and stay connected. Wire connectivity is different from wireless, but in the end in the application layer - from where this message comes - it is the same. Fixing/replacing my cable and making sure it is completely plugged in both sides fixed the issue for me. But as said, I do not know what exactly to suggest for wireless situation... may be checking with BLE from a phone - to at least figure out which side has the issue?