Hacking the OEM Navigation

[LSUMBA]

A buddy of mine just got a brand new Acura with navigation. Less than a week after buying it, he had hacked the startup screen with a custom graphic. Supposedly it is pretty easy & the instructions are online. I found them here:

http://tl.acurazine.com/forums/showthread.php?t=129765&page=1&pp=25

My question is, are there any hacks similar to this for the Toyota OEM Navigation? I know the hack to disable the buttons from greying out when in motion, but that is the only one. I figured I would try & start a thread to see if anyone knows of any others.

 

[LSUMBA]

Well, now I don;t know any hacks. I just read in another thread that if you have the updated maps DVD, the service menu is no longer accessible. This blows!