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Because after upgrading the old settings may be lost, so please write down the key settings as a backup before you start to upgrade. Step 1 Log into the TP-LINK device by typing http://192.168.0.254/ in the address bar of the web browser (such as Internet Explorer, Firefox).
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Step 2 Click System Tools ->Firmware Upgrade, click the Browse button to choose the firmware you already extracted in the folder. Step 3 Click the Upgrade button. The device will reboot automatically after the upgrading has been finished. Please wait about 3 minutes. Step 4 Click Status, verify that the device’s firmware has been upgraded.