Q: Which version of ESP8266 firmware should I download? what are the differences?

[ESP_Luna]

Q: Which version of ESP8266 firmware should I download? what are the differences?
The Release Note updated on each version of SDK will list the issues that have been fixed, versions that have been updated, and APIs and their respective functions that have been added. You can choose the version according to its functions. Relevant Demo projects are provided on the Example of SDK, and you can choose it based on actual applications.
For SDK download, please refer to [Latest Release] ESP8266 SDK.