Instead of discarding a perfectly functional router because the manufacturer stops updating it, flashing new firmware extends the device's lifespan by years. It turns e-waste into a utility.
: IP-based QoS allowing administrators to manage bandwidth for specific connected devices.
The only way to flash an OpenWrt image to the TL-MR3420 v5 is to use in U-Boot:
The TL-MR3420 v5 is a popular target for community firmware, though installing these will . TP-Link TL-MR3420 v5 - [OpenWrt Wiki] Techdata tp-link mr3420 v5 firmware
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For advanced users, the MR3420 V5 is often a subject of interest in the open-source community. While the official TP-Link firmware is designed for stability and ease of use, third-party firmwares like OpenWrt are sometimes sought after. These alternatives can unlock features like advanced bandwidth monitoring and VPN integration, though they carry the risk of voiding warranties or "bricking" the device if installed incorrectly.
Connect your computer directly to the router using a LAN cable. Never upgrade over Wi-Fi. Instead of discarding a perfectly functional router because
The latest stock firmware (usually found on TP-Link’s support page under Archer MR3420 v5 ) is actually decent for basic use. Version MR3420v5_en_1.4.0 Build 20230608 (or newer) fixed a few lingering 4G modem dropouts.
regarding its firmware, as well as third-party community guides (like OpenWrt) that detail its technical specifications and installation procedures. Official Documentation and Firmware
Disclaimer: Firmware upgrades and flashing third-party firmware carry risks of damaging your device. Always follow manufacturer instructions carefully. The only way to flash an OpenWrt image
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If you use this router for gaming, The bufferbloat on stock firmware is terrible (adding +150ms latency under load). OpenWRT’s SQM reduces that to +15ms.