Data collection on one click firmware upgrade

When upgrading your device, relevant information to determine what firmware your device should get will be sent to a centralized server. The information is also kept for statistical purposes.

We utilize espressif arduino built-in HTTP OTA upgrade code. The relevant code can be found here: ESP32 HTTPUpdate and ESP8266 HTTPUpdate

The following headers are automatically attached to the upgrade request and is also kept for statistics:

ESP32 header	ESP8266 Header	Description	Purpose
x-ESP32-STA-MAC	x-ESP8266-STA-MAC	MAC address of WiFi modem	Used to identify the device
x-ESP32-AP-MAC	x-ESP8266-AP-MAC	AP MAC address, if different from STA
x-ESP32-version	x-ESP8266-version	Current version of your firmware	Used to determine next safe version
x-ESP32-free-space	x-ESP8266-free-space	Free space on flash	Used to determine if new firmware will fit
x-ESP32-sketch-size	x-ESP8266-sketch-size	Size of the current firmware	Used to determine if new firmware will fit
x-ESP32-sketch-md5	x-ESP8266-sketch-md5	MD5 checksum of current firmware	Used to determine if current firmware is intact
x-ESP32-sketch-sha256		SHA256 checksum of current firmware	Used to determine if current firmware is intact
x-ESP32-chip-size	x-ESP8266-chip-size	Total size of flash	Used to determine if new firmware will fit
x-ESP32-sdk-version	x-ESP8266-sdk-version	ESP SDK version of current firmware
x-ESP32-mode	x-ESP8266-mode	What mode was used to upgrade
x-AMS-board-type	x-AMS-board-type	Board type
x-AMS-meter-mfg	x-AMS-meter-mfg	Meter manufacturer
x-AMS-meter-model	x-AMS-meter-model	Meter model

All values above are kept to build statistics about firmware upgrades. Note that IP address is not linked to this information.

IP address will only exist in server access logs for up to one month.