I've tried the N hack and I was not able to connect when the router was in pure N mode (not mixed G/N). I did speedtests multiple times, and even tried 2 different firmware flashes (I have the WNR3500L open router so I can run both DDWRT & Tomato). No joy.
Josh--to answer your question--yes, there is a zip file that you can flash (in recovery mode) if you don't want to do the HEX edit. Personally, I wouldn't waste my time with this one. I'm interested if anyone else has success with this.