How to get ESP8266 firmware version?

Question

I am going to update the firmware of an ESP8266 module, but first I would like to know the current version or name.

How can I get it? Maybe with an AT command?

This is my ESP8266 module:

Answer 1

ESP8266 and the AT firmware are products of Espressif. They have everything documented on the web site.

The AT command for version is AT+GMR.