Disclaimer: Always follow official TP-Link documentation. The author is not responsible for user error during manual firmware flashing.
Don’t Ignore That Notification: A Complete Guide to the TP-Link TL-WR840N Firmware Update tp link router firmware update tl-wr840n
Click “Browse” (or “Choose File”), select the unzipped firmware file. Click “Upgrade”. Confirm the warning pop-up. Disclaimer: Always follow official TP-Link documentation