Queries the details of a specified firmware file.


Each Alibaba Cloud account can run a maximum of 20 queries per second (QPS).

Note RAM users of an Alibaba Cloud account share the quota of the account.


OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request parameters

Parameter Type Required Example Description
Action String Yes QueryOTAFirmware

The operation that you want to perform. Set the value to QueryOTAFirmware.

FirmwareId String Yes s8SSHiKjpBfrM3BSN0z803****

The ID of the firmware.

A firmware ID is returned when you call the CreateOTAFirmware operation to create the firmware.

You can call the ListOTAFirmware operation and view the firmware ID in the response.

IotInstanceId String No iot_instc_pu****_c*-v64********

The ID of the instance. This parameter is not required for the public instance but required for Enterprise Edition instances.

In addition to the preceding operation-specific request parameters, you must specify common request parameters when you call this operation. For more information about common request parameters, see Common parameters.

Response parameters

Parameter Type Example Description
Code String iot.system.SystemException

The error code returned if the call fails. For more information, see Error codes.

ErrorMessage String A system exception occurred.

The error message returned if the call fails.

FirmwareInfo Struct

The firmware information returned if the call is successful. For more information, see FirmwareInfo.

DestVersion String 4.0.0

The current version number of the firmware.

FirmwareDesc String modified-WiFi-module

The description of the firmware.

FirmwareId String UfuxnwygsuSkVE0VCN****0100

The ID of the firmware.

FirmwareName String t3q5rkNm

The name of the firmware.

FirmwareSign String 3d04ab6462633508606e5f3daac8****

The signature value of the firmware.

FirmwareSize Integer 924

The size of the firmware. Unit: MB.

FirmwareUrl String https://ota-pre.iot-thing.cn-shanghai.aliyuncs.com/ota/572ef2fd12ca4791a5b21a9eb948****/5E962CF83DB1495E8337E9C8A4D1****.bin?Expires=1577587360&OSSAccessKeyId=cS8uRRy54Rsz****&Signature=farzC8%2FVMN4HYdEtXvdiC2OevH****

The firmware URL that is stored in OSS.

ModuleName String WifiConfigModify

The name of the firmware module.

Firmware updates are based on the firmware modules of a device.

ProductKey String a19mzPZ****

The ProductKey of the product to which the firmware belongs.

ProductName String MyProduct

The name of the product to which the firmware belongs.

SignMethod String MD5

The signature method of the firmware.

SrcVersion String 1.0.0

The version number of the firmware to be updated.

Note This parameter is returned if you perform a delta update.
Status Integer 2

The status of the firmware. Valid values:

  • 0: unverified
  • 1: verified
  • 2: verifying
  • 3: failed to be verified
Type Integer 0

The type of the firmware update. Valid values:

  • 0: full update
  • 1: delta update
UtcCreate String 2019-12-28T02:42:22.000Z

The time when the firmware was created. The time is displayed in UTC.

UtcModified String 2019-12-28T02:42:41.000Z

The time when the firmware was last modified. The time is displayed in UTC.

VerifyProgress Integer 0

The progress of the firmware verification. Valid values:

  • 0: unverified
  • 100: verified
  • A value N between 0 and 100 indicates that the update task is N percent completed. You can check the Status response parameter to view the firmware verification status.
RequestId String A01829CE-75A1-4920-B775-921146A1AB79

The ID of the request.

Success Boolean true

Indicates whether the call was successful. true indicates that the call was successful and false indicates that the call failed.


Sample requests

&<Common request parameters>

Sample success responses

XML format

        <FirmwareUrl><![ CDATA[https://ota-pre.iot-thing.cn-shanghai.aliyuncs.com/ota/572ef2fd12ca4791a5b21a9eb948****/5E962CF83DB1495E8337E9C8A4D1****.bin?Expires=1577587360&OSSAccessKeyId=cS8uRRy54Rsz****&Signature=farzC8%2FVMN4HYdEtXvdiC2OevH****]]></FirmwareUrl>

JSON format

  "RequestId": "A01829CE-75A1-4920-B775-921146A1AB79",
  "FirmwareInfo": {
    "SrcVersion": "",
    "FirmwareSign": "3d04ab6462633508606e5f3daac8****",
    "ProductKey": "a19mzPZ****",
    "Type": 0,
    "UtcModified": "2019-12-28T02:42:41.000Z",
    "SignMethod": "MD5",
    "UtcCreate": "2019-12-28T02:42:22.000Z",
    "FirmwareSize": 924,
    "Status": 2,
    "FirmwareId": "UfuxnwygsuSkVE0VCN****0100",
    "FirmwareDesc": "modified-WiFi-module",
    "FirmwareUrl": "https://ota-pre.iot-thing.cn-shanghai.aliyuncs.com/ota/572ef2fd12ca4791a5b21a9eb948****/5E962CF83DB1495E8337E9C8A4D1****.bin?Expires=1577587360&OSSAccessKeyId=cS8uRRy54Rsz****&Signature=farzC8%2FVMN4HYdEtXvdiC2OevH****",
    "DestVersion": "4.0.0",
    "ProductName": "MyProduct",
    "FirmwareName": "t3q5rkNm",
    "ModuleName": "WifiConfigModify",
    "VerifyProgress": 0
  "Success": true

Error codes

For a list of error codes, visit the API Error Center.