Make your own risk analysis and depending on application decide what library functions to implement. Integrity of transferred data is verified on ESP side using MD5 checksum. ArduinoOTA and espota.py use Digest-MD5 to authenticate upload. Void setPort ( uint16_t port ) void setHostname ( const char * hostname ) void setPassword ( const char * password ) Ĭertain protection functionality is already built in and do not require any additional coding by developer. To reduce likelihood of being hacked consider protecting your uploads with a password, selecting certain OTA port, etc.Ĭheck functionality provided with ArduinoOTA library that may improve security:
![esp8266 firmware alternatives esp8266 firmware alternatives](https://hackaday.com/wp-content/uploads/2015/03/esp8266-how-to-thumb.jpg)
That poses chances of module being violently hacked and loaded with some other code. Module has to be exposed wirelessly to get it updated with a new sketch. Chapters below provide additional information regarding security and safety of OTA process. Developer should ensure that application running on module is shut down and restarted in a safe manner. Once update is complete, module restarts and new code is executed. It is up to developer to ensure that updates are allowed only from legitimate / trusted source. There is no imposed security on OTA process from being hacked. If OTA routines are correctly implemented in a sketch, then all subsequent uploads may be done over the air.
#Esp8266 firmware alternatives serial#
In any case first firmware upload have to be done over a serial port. The two other options would be more useful after deployment, to provide module with application updates manually with a web browser or automatically using a http server. Such functionality became extremely useful in case of limited or no physical access to the module.Īrduino IDE option is intended primarily for software development phase.
![esp8266 firmware alternatives esp8266 firmware alternatives](https://community-assets.home-assistant.io/original/3X/1/b/1b6e42abbf8255dfc5bb6d67bbd6c5e5f645f649.jpeg)
OTA (Over the Air) update is the process of loading the firmware to ESP module using Wi-Fi connection rather that a serial port.