Search found 6 matches

by javqui
Fri Aug 02, 2019 10:21 pm
Forum: Hardware
Topic: ESP32 stops working for no apparent reason in field
Replies: 15
Views: 19470

Re: ESP32 stops working for no apparent reason in field

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...
by javqui
Sun Jul 28, 2019 11:13 am
Forum: Hardware
Topic: ESP32 stops working for no apparent reason in field
Replies: 15
Views: 19470

Re: ESP32 stops working for no apparent reason in field

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...
by javqui
Fri Jul 05, 2019 1:05 pm
Forum: ESP-IDF
Topic: Encrypted OTA + Flash Encryption + Secure Boot
Replies: 11
Views: 17374

Re: Encrypted OTA + Flash Encryption + Secure Boot

Thanks,
Great observations. I was balancing the pros and cons about an unique key per device.
by javqui
Thu Jul 04, 2019 9:30 am
Forum: ESP-IDF
Topic: Encrypted OTA + Flash Encryption + Secure Boot
Replies: 11
Views: 17374

Re: Encrypted OTA + Flash Encryption + Secure Boot

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...
by javqui
Wed Jul 03, 2019 4:26 pm
Forum: ESP-IDF
Topic: Encrypted OTA + Flash Encryption + Secure Boot
Replies: 11
Views: 17374

Re: Encrypted OTA + Flash Encryption + Secure Boot

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...
by javqui
Tue Jul 02, 2019 5:38 pm
Forum: ESP-IDF
Topic: Encrypted OTA + Flash Encryption + Secure Boot
Replies: 11
Views: 17374

Encrypted OTA + Flash Encryption + Secure Boot

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...