I only see lora challenger 868 after pressing boot button on my mac?

[pede]

Hi,

since yesterday I have a really strange behavior on my lora challenger 868 board After connecting it to my mac I don't (!) see circuitpython drive in the finder (before all works fine, I use my high quality usb cable since month). After pressing the boot button suddenly the feather appears. After connecting the adafruit pcf8523 rtc clock board, the feather is again death? Pressing the boot button doesn't helps now. After installing circuitpython again on the board same behavior? Using the pcf8523 on another board it works.
Is there an Factory Reset UF2 or does NukeUF2 with instructions available.
My thx in advance.
regardly
Peter

[Pontus]

That does sound a bit odd. But you can find instructions and the binary that you need in this post https://www.hackster.io/news/need-to-wi ... 8c8fd3d8f5
Let us know how that works out to you.