Important: Keep this tab in the foreground during flashing. Full flash takes 2-4 minutes.
If you get a timeout, try "Firmware Only" first, then "Filesystem Only" separately.
WiFi setup: when flashing finishes, choose Connect to Wi-Fi in the
dialog, pick your network and enter its password. The board joins it and the dialog
shows a Visit device link. For an already-flashed board, click the button above,
connect, and choose Change Wi-Fi.
Your browser does not support the Web Serial API.
Please use Google Chrome, Microsoft Edge, or Opera.
The device's File Transfer page sends files over LoRa through each
computer's USB connection to its board. Chrome does not allow the device's page
(plain http) to open serial ports itself, so on Windows run this small tray helper
first. Download it here while you have internet access: no installer, no admin rights.
If SmartScreen warns about an unknown publisher, choose More info → Run anyway.
When Chrome asks to let the device page access apps on this computer, choose Allow.