I just tried to include bluetooth in my ESP32 project, and it bumped the executable size by half a meg (500K).

That is ridiculous!

I'm fast concluding that BLE on an ESP32 is unworkable. <sigh>

Will just have to use an ESP8266 with a HM-10 module instead.

I'm interested in OTA over BLE as well.

Though in my case, I may use BLE to let the user set the Wifi SSID/Pswd for the device, and then let the device connect and do the OTA over wifi.

Thanks!