Furrow

Flash a blank ESP32 with Furrow firmware for the first time - straight from your browser, no software to install.

Firmware version
⚠️ This needs Chrome or Edge on a computer, connected over USB. Safari, Firefox, and any browser on iPhone/iPad can’t do this - it’s a platform limitation, not something this page can work around.
How this works
  1. Connect the ESP32 to this computer with a USB cable.
  2. Click Connect device above and pick the right serial port when your browser asks.
  3. Choose Install - this erases the chip and writes the selected firmware from scratch, since this is meant for a blank or previously-different device.
  4. Wait for it to finish. Don’t disconnect the cable while it’s writing.
  5. Once it reboots, follow SETUP.md to connect it to WiFi and your Furrow account for the first time.
Already have a Furrow device running? Don’t use this.

This tool is for a device that has never run Furrow firmware before, or one you want to wipe and start over on. An already-provisioned device updates itself remotely from its own dashboard panel (Advanced settings → Update firmware) - no cable needed, and it won’t lose its WiFi/owner configuration the way a full flash from here would.

Troubleshooting

No port shows up when you click Connect: your computer may need a driver for this board's USB-to-serial chip (commonly CP2102 or CH340) - search for "CP2102 driver" or "CH340 driver" plus your OS. Most Mac/Linux systems already have these built in.

Connects, but the install fails partway through: some bare ESP32 boards need you to manually hold the BOOT button while it connects, since they lack the auto-reset circuit that handles this automatically on most dev boards. Hold BOOT, click Connect, keep holding until it starts writing, then release.

Something went wrong and the board won't boot at all: this is recoverable - hold BOOT, briefly press and release EN (reset), then release BOOT. This forces the chip back into download mode so you can just try the flash again.

Firmware built and published automatically from github.com/ultranoob-5/furrow on every tagged release - this page never modifies or stores it, only relays it from GitHub.