Launch the TP-Link Deco app and log in. Tap the "More" button, then choose "Update Deco." The app will check for available firmware updates. If an update is available, use the on-screen instructions to download and install it. Ensure that your Deco units stay powered on during the upgrade process. If you require any extra assistance about tp link deco firmware update, please visit our website. Our live chat feature will allow you to contact our experts.