Disclaimer: Flashing third-party or modified firmware voids any remaining warranty and may violate local telecommunications laws. Proceed at your own risk. The author is not responsible for bricked devices.
Using the wrong firmware version can permanently damage (brick) your router and void any remaining warranty. Step-by-Step Firmware Update Guide tp-link wr340g v5 firmware download
If the upgrade fails or the router is bricked: tp-link wr340g v5 firmware download
: TP-Link states that hardware version V5 does not officially exist for this model, despite what may appear in the software settings. Third-Party Warning tp-link wr340g v5 firmware download
Better performance with slightly newer wireless devices.