Hi, I'm navigating similar waters. Just started the troubleshooting and 'reasons research'. I have 5 faulty units from 12 preliminary prototypes that are having similar issues as described here. I will post more information as soon I get it. Got all WROVER-16MB (with a mix of PCB and external anten...

Hi, I'm navigating similar waters. Just started the troubleshooting and 'reasons research'. I have 5 faulty units from 12 preliminary prototypes that are having similar issues as described here. I will post more information as soon I get it. Got all WROVER-16MB (with a mix of PCB and external antenn...

Thanks,
Great observations. I was balancing the pros and cons about an unique key per device.

Thanks so much ESP_Angus for your suggestions. Maybe I'm missing something here. What I did was: encrypt the firmware with the same key stored in flash (BLOCK1), upload to the remote server, then the ESP32 will download it using the OTA API modified. The only modification was to write to flash "as i...

Hi, Thanks for so quick response. I forgot to mention some details, I was too tired yesterday. Here are more details: Hardware: ESP32-WROVER-IB (16MB) dev v4.0-dev-1018-gbbafd5066 I went a little further yesterday and remove "temporarily" the lock/unlock SPI flash check. I know that is not the final...

I have been working with the secure boot and flash encryption and OTA for the last days. All of them were working individually without issues (http and https OTA for about a year). I have several days with a problem with the OTA update and flash encryption. I have a huge pressure to release this sec...