Prepare a computer with an operating system (such as Windows, macOS, or Linux) and a Micro-USB cable.
Download the new UF2 firmware that you want to flash to the Picopad. The original firmware for the Picopad can be found on our Github.
Make sure the Picopad is turned off.
Connect the Picopad to the computer using the USB cable. Press and hold the "BOOTSEL" button while connecting.
The Picopad will appear as an external device on your computer (similar to a USB drive). In this mode, you can flash firmware to the Picopad.
Copy the downloaded UF2 firmware to the Picopad. Simply drag and drop the UF2 file into the open file management window.
After the copying is complete, the Picopad will automatically restart, loading the new firmware.
After the restart, the new firmware should be successfully flashed to the Picopad.