Is your .bin file for an ESP32?
Is your .bin file for an ESP32?
Developer Zone -> Blynk.Air (OTA) menu and then everything else is straight forward. Here is step-by-step guide https://docs.blynk.io/en/blynk.edgent/updating-devices-firmwares-ota

#include <WiFiS3.h> library with Arduino R4 and make things working with Blynk.Air (OTA). Meanwhile, you can try and follow this https://github.com/Blynk-Technologies/Blynk-NCP-Example-ArduinoDeveloper ZoneBlynk.Air (OTA)#include <WiFiS3.h>