Uart ltchiptool

Using ltchiptool (wired, via UART)

You can use the ltchiptool GUI or CLI to manually flash the firmware. Grab the firmware.uf2 file from the build directory. Then, follow the ltchiptool usage guide to flash it to the device.

Tip

The UF2 file may have a different name, depending on the project you're building. Usually it's best to grab the latest (sorted by date) file with UF2 extension from the build directory.