Leave it to the creative cooks working in the kitchen at XDA Developers' forums to come up with a way to serve Android
4.0 'Ice Cream Sandwich' (ICS) on Barnes & Noble's Nook Tablet device. A locked bootloader made things more challenging than they had to be, but as with similar recipes, installing ICS on the Nook Tablet is simply a matter sidestepping the locked bootloader altogether. They've figured out how to do that.
"So now that we have found the leaking crack in the bootloader and proved its usefullness... others are going to start work on a couple of key projects that I could use a little help on," Android developer Brandon Bennet (nemith) said in a post.
CyanogenMod 9 has already been shown up and running on the device, which is loaded by booting off a microSD card instead of the tablet's internal storage. Now it's just a matter of tweaking things a bit before Bennet releases the necessary tools to the public.