I have the same question.I don't know how to load the certificate.have you solved?

backgroud: my ESP8266-12 was welded on my stm32 board ,connecting by usart2. and i want to update the firmware of ESP8266,so I program STM32 to transmit DownloadTool data for me,at the same time forward 8266 data to DownloadTool ,like this: http://chuantu.biz/t5/168/1502447960x2728309669.png i finis...