Hacker News Reader

But the browser is involved. Can the browser do OTA to esp32?

The browser connects to a webserver running on the ESP32. Over wifi -> over the air. OTA doesn't mean headless or automatic

I believe the ESP32 runs a small web server that supports WebSerial (?), if you can reach it over WiFi or somesuch, you should be able to upload the new firmware blob that way.

Reply on news.ycombinator.com