Quote:Don't understand why you say that its a pity. If you are talking about updating the Arduino software via OTA, I'm afraid that it can't be done, at least in the way your are thinking.
I said that because an ESP is not just an wifi to serial device. It's an SoC with upto 8M flash wich can do much more than that. There are a few flavours of programming languages flashable. Arduino ide version is one of them and even basic is possible. Standard they're coming with the AT command set, but that can be changed.
A more interesting device is the ESP32 wich has bluetooth and dual core. It's the successor of the esp8266.
About OTA,
Don't know if you can read spanisch. Here's a link about updating arduino using the old ESP-01
https://www.sistemasorp.es/2014/11/11/pr...o-esp8266/
Regards, Zappie