Definition: Given an Amazon customer review, write a title for the review. The preferred titles are under fifteen words.
Input: I've had version 2 of this router for two years now, and it worked almost flawlessly(Could not get it to act as a VPN Server - VPN Client was fine).  I recently switched my ISP from DSL to Cable Modem, and the router would start crashing about once a day.  After about two hours of research, I determined that the latest version of the firmware at the time(1.45.7) was contributing to the problem.  Downgrading the firmware fixed it and I have had no problems since.  This thing is a rock, but be careful about upgrading the firmware, as it might cause problems like this.  Looks like they've just released a new one for versions 1 and 2...

Firmware Upgrades Beware