If you own a , you know it’s a reliable workhorse for 3G/4G backup connectivity and standard home routing. However, like any networking device, its performance, security, and feature set depend entirely on one critical component: the firmware .
For power users, OpenWrt provides a full Linux-based environment but voids your warranty. [OpenWrt Wiki] TP-Link TL-MR3420 v5 tplink mr3420 v5 firmware