Browser firmware installer

RSVP Nano

Flash the reader from Chrome or Edge without installing VS Code, PlatformIO, or command-line tools. Connect the device by USB, click install, and let the browser write it directly to the ESP32-S3.

Install Firmware

This release includes the reader plus USB SD-card transfer support in one firmware.

RSVP Nano firmware Main reader firmware with on-device EPUB conversion and USB SD-card transfer mode. Use Chrome or Edge on desktop with Web Serial support. This page must be opened over HTTPS or localhost.
Flashing replaces the firmware on the connected ESP32-S3. Keep the device plugged in until the installer says it is finished.

Before You Click Install

  1. Use Chrome or Edge on macOS, Windows, Linux, or ChromeOS.
  2. Connect the device with a USB data cable.
  3. If the installer cannot connect, hold BOOT, tap reset or power-cycle, then try again.
  4. After flashing, place books on the SD card under /books.

The browser flasher is powered by ESP Web Tools and Web Serial. iOS Safari and Firefox do not currently support the required browser serial API.