Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent hardware, upgrade firmware

I have had this router for over 1 year now, however I have many issues with the installed firmware. After upgrading to DD-WRT, all my problems went away and the router is rocksolid. Many reviews will confirm that this router has excellent hardware, it's the firmware that's the problem and unfortunately D-Link has not fixed the problems. Flash with DD-wrt and it should fix them...my medicine router has been stable for months with to reboots required and excellent performance.