Before changing anything, save your current configuration (Wi-Fi name/password, ISP login, port forwards).
router is essential for improving network stability, fixing security vulnerabilities, and sometimes boosting Wi-Fi speeds. tp link router firmware update tl-wr840n
Cybercriminals constantly scan for routers with known vulnerabilities. Older firmware on the TL-WR840N may contain exploits that allow hackers to hijack your DNS, steal login credentials, or enroll your router into a botnet. TP-Link regularly releases patches to fix these security holes. Before changing anything