: Addressed a NetUSB-protocol vulnerability.
As of OpenWrt 23.05+, the MR3420 v5 is officially supported in the master branch due to incomplete MediaTek MT7628 driver integration for the 4G LTE USB failover switching logic.
TP-Link TL-MR3420 V5 is a 3G/4G Wireless N Router designed to share mobile broadband connections via a USB modem. Keeping its firmware updated is critical for maintaining compatibility with newer USB modems, enhancing security against vulnerabilities like WPA2 (KRACKs), and improving overall system stability. www.tp-link.com Official Firmware Downloads