Tracker
Ground Station
Plug the board in over USB, click the button, and pick the serial port
(
USB JTAG/serial debug unit or CP210x).
If the port doesn't show up, hold BOOT while pressing RST to enter the bootloader.
Download UF2
The Wio Tracker L1 is an nRF52 board, so it isn't flashed over serial.
Double-tap the reset button to enter the bootloader, then drag the
downloaded
wio-eink-groundstation.uf2 onto the USB drive that appears.