I modded the DATA.ZIP file from Pioneer's update without unpacking it using winzip, and here it is available for download. This just modded to bypass the lockout so you don't have to do the mute wire ground trick. You still should have to ground the parking brake wire.
It should be injected back into the file system here:
\LPUE080\APL2\iGo
For those of you who don't understand how to modify this, you can just copy my version over to the head unit (after you rename the original one to data.bak.)
http://files.filefront.com/datazip/;120 ... einfo.html
Please keep in mind this is untested. I am just going by what I have been reading on here. Please let me know if you experience any issues with this.