I nearly bricked my N810 completely (yay for the "triple-boot[using the internal MMC as a secondary environment instead of flash, but keeping the flash untouched so I wont end up with a bootloop]" I set up), so when I finish this install, I may write up a revision for those who want to use this with N810, via dual-booting.

-Final Edit: Nevermind, I'm just giving up on trying to put Ubuntu onto my N810. I had to do a full reflash because my N810 would automatically start up as soon as I put the battery in, and would freeze on the "Nokia" screen until I pulled the battery out. Id rather not risk any further problems