Hi, It just takes a few minutes usually to upgrade firmware. Are you doing the update on the computer that connects to the LAN port of the router? No power cut off, right? You may need to reboot the...

Hi, How about speed through Ethernet connection? If just Wi-Fi is slow, may change wireless settings. Here's the guide https://www.tp-link.com/en/faq-2170.html Hope that helps

Hi, What's the LAN led status? If it's not lit up, change cable and try other LAN ports. And the best way to verify it is connect another desktop or device to the LAN port on the router. If same...

Hi, Here are some suggestions: https://www.tp-link.com/en/faq-2237.html Contact tplink support to troubleshoot if problem not solved.

Hi, There is limit to block devices through tether app. The limit varies between models. You may remove some of devices in the blacklist, then block new device to see if that works. If yes, then it...

Hi, Here's the suggestion https://www.tp-link.com/au/faq-2236.html Contact tplink support if problem not solved.