The tplink router fails to be upgraded. The error code 18003 is displayed. How can this problem be solved?

Upgrade failed. Error code 18003 is displayed.

Symptom

The router fails to be upgraded. The error code 18003 is displayed, as shown in the following figure:

Solution:

This problem occurs because an incorrect upgrade program is used and the upgrade file is inconsistent with the router. You can only upgrade the software of the same version of the same model. Different software and hardware versions cannot be used.

The methods to confirm the model and version information are as follows:

Method 1: Models and hardware versions can generally be found at the bottom of the vro, as shown in the following figure:

Method 2: In the vro management interfaceSystem Tools > Software upgradeYou can view the product model and hardware version, as shown in the following figure:

After confirming the version information, go to the service support page on our official website, enter the product model in the search box of the download center, and find the upgrade program of the corresponding version to download.