I've read the FAQ's and I have one question: When I put the card in by my 90BT with 'Testmode' on it, do I have to do that everytime I want to install a hack or does it stay in some sort of 'hackable mode'?

I'm trying to do the motion software hack first and I have downloaded and prepared a card for Testmode. I have also altered the pioneer_ini file from 16 to 128. SO I do testmode first, remove the card and insert a second card with the updated Data file and that's it? OR do I put both Testmode AND the mod'd Data.zip file on the same card at the same time?

I know this is a basic question but if you could just get me started....

Yes you have to boot into testmod via the sd card every time you want to do hacking.

You can have your altered data.zip file on the same card as the test mode files.

I have a dedicated 2 gig SD card just for the avic hacking...

Hope that helps.

To clarify, you copy the changed DATA.ZIP to the headunit so you do NOT need the card afterwards.