We have a commercial product in a very niche market, but I don't know that it could be considered "consumer friendly" to everyone so I won't share any links. I am very satisfied with Espressif and esp-idf as a platform and happy we went this route. Did you have any particular questions about bringin...

"repartition.c" #include <stdio.h> #include "freertos/FreeRTOS.h" #include "esp_ota_ops.h" #include "esp_err.h" #include "nvs_flash.h" #include "nvs.h" #include <esp_log.h> #include "modes.h" extern int current_mode; static const char no_factory[] = { 0xAA, 0x50, 0x01, 0x02, 0x00, 0x90, 0x00, 0x00, ...

We just did something similar, but relied on the existing OTA mechanism to shift the application for us.

I posted about it here:
viewtopic.php?f=13&t=12004

We managed to successfuly update our partition table on deployed devices. The end goal was to remove the default factory partition to allow us to increase the size of the OTA partitions as our application is nearing the 1MB limit. This was facilitated by our application and supporting infrastructure...

You have a limited amount of memory to work with so you cannot load the whole file into a string, you need to read the file in chunks and upload to the server. See an example from the SDK here: https://github.com/espressif/esp-idf/blob/master/examples/protocols/http_server/file_serving/main/file_ser...

Yes but you will lose anything stored in NVS

Is there a reason I would need to erase the existing partition table?

Assuming SPI_FLASH_DANGEROUS_WRITE is enabled, could I not use esp_flash_write or something similar to write a single byte in the flash to change the subtype if I knew the correct offset? (and perhaps a new CRC).

Apologies if this has been asked elsewhere, I tried to use the search function but did not seem to yield any results. I have an application which is currently using the standard 1 Factory Partition / 2 OTA layout. I would like to push a new OTA update out to users which changes the Partition Subtype...