When I try to perform the update I get the message that OTA update saw an invalid magic byte.(expected 0xE9, saw 0x3c)
I'm using the bin file in my app's build directory. And the docs say that any bin file is fine. So I'm not sure what's up.
John AYou've probably noticed there is nothing special about the "hello world" example when used for OTA updates. This is because any .bin app file which is built by esp-idf can be used as an app image for OTA. The only difference is whether it is written to a factory partition or an OTA partition.