ESP32-S3-WROOM encryption with USB interface for production?

[Jonathan2892]

Hello,

I have project in which all GPIOs of the esp32-s3-wroom are used. I will have access to update the firmware via OTA and via the USB interface (GPIO19 and GPIO20). Why USB interface? -> Because then I do not need access to the BOOT and the EN pin, right?

But when I do the flash encryption with a pre-generated key, which I know and store at a safe place, can I still do updates via the USB interface with pre-encrypted firmware? Or do I need the UART0 interface for that?

Best,
Jonathan

[mikemoy]

But when I do the flash encryption with a pre-generated key, which I know and store at a safe place, can I still do updates via the USB interface with pre-encrypted firmware? Or do I need the UART0 interface for that?

Just try it.