Please read this!!!
by E-gizmo Mechatronix Central

UPDATING FIRMWARE VERSIONS

"ESP_8266_BIN0.92.bin" - is to set ESP into the default firmware device name  "AI-Thinker"

"nodemcu_float_0.9.5_20150318.bin" - is for ESP -07 and up as webserver
See the sample power point LUA connect to wifi (As webserver)

"nodemcu_latest.bin" - is for ESP11 as webserver

"v0.9.2.2 AT Firmware.bin" - is for AT commands using Arduino programming or manual AT commands