In order to make it simple to get up and running with no programming required, we've created a drag-and-drop firmware you can use. If you're just getting started with your NeoTrellis M4, there is lots more info here in the main Learn Guide!
First, download the firmware file linked in the button below and save it to your computer hard drive somewhere you'll be able to find it, such as your Downloads folder.
Plug your NeoTrellis M4 into your computer with a good quality, data capable USB cable. Your NeoTrellis will start up, and you'll see a purple indicator light on the back side.
Now, we'll put the NeoTrellis into bootloader mode. In this mode it will appear as a USB drive on your computer and will be ready to receive a new .uf2 firmware file. Use a thin, pointed object such as a headphone plug to double-click the reset button on the back side of the board.
Once you have double-clicked the reset button, the indicator LED will turn green. You'll notice a new USB drive appear on your computer named TRELM4BOOT, this is the bootloader USB storage built right into the NeoTrellis. It is now ready to receive the firmware file.
Now, drag the TM4ARPY.UF2 file onto the TRELM4BOOT drive. The file will copy over in a few seconds and then the NeoTrellis will automatically restart itself (you'll see the TRELM4BOOT drive disappear, don't worry, this is normal!). The status LED will return to purple, indicating regular operation mode.
Congratulations, you've updated the firmware and you're ready to play!