# About the usage of Rev2 esp8266 at command

**URL:** <https://bbs.aprbrother.com/t/about-the-usage-of-rev2-esp8266-at-command/676>\
**Category:** Arduino\
**Created:** [August 5, 2016, 7:58am UTC](https://bbs.aprbrother.com/t/about-the-usage-of-rev2-esp8266-at-command/676 "2016-08-05T07:58:20Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![aprilpea](https://bbs.aprbrother.com/user_avatar/bbs.aprbrother.com/aprilpea/32/9_2.png) [@aprilpea](https://bbs.aprbrother.com/u/aprilpea)\
**Post date:** [August 8, 2016, 2:08am UTC](https://bbs.aprbrother.com/t/about-the-usage-of-rev2-esp8266-at-command/676/5 "2016-08-08T02:08:06Z")

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Hi,

Did you re-flash the firmware for esp8266 module? Please check the topic “[about cactus micro r2 recently](https://bbs.aprbrother.com/t/about-cactus-micro-r2-recently/493/2)”

Please make sure which firmware you choose. The sketch you post can only work with the firmware espduino. It can’t work with AT firmware.

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_[View the full topic](https://bbs.aprbrother.com/t/about-the-usage-of-rev2-esp8266-at-command/676)._