Instructions

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Espressif Systems
ESP8266
AT Instruction Set
19.
AT+CIUPDATE – Update through network
Firmware upgrade depends on network condition. It will return ERROR if upgrade failed due to
unfavorable network conditions. Please wait for some time before retrying. !
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If using Espressif AT BIN (\ESP8266_NONOS_SDK\bin\at), "AT+CIUPDATE" will download new AT
BIN from Espressif Cloud. !
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If using user-compiled AT BIN, users need to make their own "AT+CIUPDATE" to upgrade,
Espressif provide a demo in \ESP8266_NONOS_SDK\example\at. AT BINs on server have to be
named as "user1.bin" and "user2.bin".!
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It is suggested that users should call "AT+RESTORE" to restore the factory default settings after
upgrading the AT firmware.!
20.
AT+CIPDINFO – Show remote IP and port with "+IPD"
AT+ CIUPDATE – update through network
Command
AT+CIUPDATE
Response
+CIUPDATE:<n>
OK
Parameters
<n>
1 : found server
2 : connected to server
3 : got edition
4 : starting update
AT+CIPDINFO – Show remote IP and port with "+IPD" ( received data from network )
Example
AT+CIPDINFO=1
Command
AT+CIPDINFO=<mode>
Response
OK
Parameters
<mode>
0 : will not show remote IP and port with "+IPD"
1 : show remote IP and port with "+IPD"
Espressif Systems  / Friday, July 15, 201670 73