ESP32 to Mega2560

Hello all, I have an issue I need help solving:

I have a project involving multiple programs tied to control an Arduino mega 2560. I also have an esp32 screen with An SD Module attached to it. I would like to see if I can store the binary programs within the esp32 screen and using the interface to upload a program to Arduino mega 2560. Not a multiple program upload, just the ability to upload different programs at different times when needed

What is the question? What have you accomplished. Can you post an annotated schematic as to how you have it wired?

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