I assume that the OTA system is happy with the file since it proceeds to 100% during the upload phase. That progress is not just data transfer but actual flash programming, right? It seems like we get down to the very end and decide not to switch to the alternate OTA partition.

I'm just uploading new sketches. I'm not using SPIFFS or LITTLEFS so it's just the sketches. I have not configured any security on the device (at least not intentionally). I can erase the flash with esptool and no special arguments.

I have a project on the Wemos ESP32S2 mini V1. It has the USB-C port for programming but I need to do OTA flash programming in the long run. With the configuration I have now, the OTA upload works just fine. It just always fails at the end with Uploading: [===========================================...

Thanks for the pointer to that info. It was what I was looking for. However, even setting the level to 5 (verbose), I don't see anything on the Serial stream when my loop() stops getting called. I am in the process of trying to get my debugger working but I'm having communication issues with it that...

Hi, I've been developing with the ESP8266 and ESP32 for years and never ran into this issue until now. I have an ESP32-WROVER-E with 16MB of flash and 8MB (4MB useable) of SPI PSRAM. Development is with vscode+PlatformIO. This system boots and gets into a good idle state with ArduinoCore calling loo...