Web Installer

Flash RPCortex v0.8.1-beta2 directly from your browser. No desktop software, no drivers, no Thonny required.

Web Serial API not supported. Use Chrome 89+, Edge 89+, or Opera. Firefox and Safari are not supported. Switch to a Chromium-based browser to use this installer.
1

Flash MicroPython

Flash MicroPython firmware v1.20+ to your board first. Download from micropython.org →

2

Connect via USB

Plug your board into USB. Make sure no other serial program (PuTTY, Thonny) is connected to the same port.

3

Open in Chrome

This installer requires Chrome 89+, Edge 89+, or any Chromium-based browser. The Web Serial API is not available in Firefox or Safari.

Version:

Ready to install

Select a version above, connect your board, and click the button below.

Chrome will open a port picker dialog.

Connected
This will overwrite all files on your device. First-run setup will run on next boot.

Installing…

Preparing…

installer log
✓

Installation complete!

All files have been written to the device.

  1. Disconnect and reconnect your device from USB.
  2. Open PuTTY (or any serial terminal) at 115200 baud.
  3. Complete the first-run setup wizard — you'll set the root password and optionally add the package repo.
✗

Installation failed

Transfer a File

Copy any file to your device over USB — ideal for dropping .pkg files onto an offline Pico. Pick a file, set the destination path, and hit Send.

After transfer: use pkg install /path/to/file.pkg in the shell to install.  •  No WiFi required.

How it works

The installer establishes a serial connection to your device's MicroPython REPL, fetches the RPCortex .rpc release archive, extracts it in-browser, and transfers each file using MicroPython's raw REPL mode — the same protocol used by tools like mpremote and Thonny.

A .rpc file is a standard ZIP archive with a custom extension. You can also select a local one if you've downloaded it manually.

The File Transfer tool above works with any board variant — including offline Pico 2 (non-W). No desktop software or WiFi required. Web Serial requires Chrome 89+ or Edge 89+.