Download JumpStik

Download firmware 1.9.10

Install it in the portal: Settings → System → Firmware update. Your settings are kept. It installs on devices whose support & updates plan covers this release — otherwise renew first.

Recovering a device over USB

Only needed if a device won't start. Your license stays with the device.

1. Open the enclosure and plug the board into a computer with a data USB cable.
2. Open espressif.github.io/esptool-js in Chrome or Edge, click Connect and pick the board's port.
3. Set the address to 0x0, choose the downloaded file, click Program.
4. Once it's back on WiFi it picks up its license by itself.