Developer James Whelton has done a basic springboard hack on the square-faced iPod nano, figuring out how to bypass the cache comparison and uncovered some interesting information.
The springboard hack is just the removal of a app and creation of a blank space. Not that amazing, but whats important is the bypass of Nano’s cache comparison, which compares any modded SB file and reverts it if it doesn’t like it, this opens up the possibility of hacking and modding, while not adding bootloaders or any of that fun stuff.
Whelton noted some additional findings such as the plists in the iPod nano referencing support for Movies, TV Shows, Apps, Games, vCards, Calender events and so on, with a few other cool things like a passcode lock. Whelton is in the process of enabling the abovementioned features.