First of all: my board used to work fine.
Now my Nano 33 IoT turns ON (green light) when connected to USB on Mac but:
- doesn't enter in upload mode after pressing twice on board button.
- doesn't shows up in any serial port: nor
For reasons too long to explain, I want to connect via ANY pins to the SAMD21 and force the burning of a new bootloader.
Is that possible in any way? Any idea is welcome!