Upload Arduino Sketch to ESP32 via Another Controller using SPI/I2C

[Runsva]

Is it possible to upload a single Arduino "INO" code file to an ESP32 controller board, via another ESP32 board (or any Arduino microcontroller), using SPI or I2C and the Ardunio IDE v2.3.3?

So:

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I'm aware that it is possible to do so using the serial pins on the ESP32 controller, as demonstrated in another Espressif Forums posting, but I'm looking for a method of doing it via SPI or I2C (so I can upload to multiple ESPs in parallel).

Thanks for reading my post, any guidance is appreciated.

[lbernstone]

I think UART is probably easier to implement, but take a look at https://github.com/espressif/esp-serial-flasher