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Flash a coin box

PisoPhone firmware onto an ESP32, from this browser

You need

The coin box's ESP32 board (ESP32-C3 or ESP32), plugged into this computer with a USB data cable.
Nothing else: no programs to install. The page finds the chip and writes the matching firmware.

Erase everything first (a new box, or a used one: it forgets its old Wi-Fi and settings). Untick only to update a box in use: erasing also clears its license slots and coin counters (a box in use is better updated from its own page).