Flash firmware
Flash the ST3215 adapter firmware to a Raspberry Pi RP2040 or
RP2350 Pico, straight from the browser over WebUSB (PICOBOOT).
No picotool, no drag-and-drop.
This page needs WebUSB — use Chrome, Edge, or another Chromium
browser over HTTPS (or localhost). Firefox and Safari don't support it.
1. Put the adapter in BOOTSEL
Either hold the Pico's BOOTSEL button while plugging it in, or — if the adapter firmware is already running — click below to reboot it into the bootloader automatically (a 1200-baud reset touch).
2. Choose firmware
Loading hosted builds…
…or flash a local .uf2: