Region free mod on va2 dreamcast?

Hey, this is my first time trying to region free mod a va2 model dreamcast. I just opened it up and noticed the board is laid out differently. Does anyone have a wiring diagram specific to the va2 boards? I want to do the piggyback install method.

 

http://youtu.be/sCrVr1PvP1U

 

Thanks, but I'm pretty sure that guy is using a different mod chip. I'm using the bios chip with the region free dev kit flashed to them. I would want to piggy back the new bios chip on top of the old one so I can switch back and forth from the retail bios to the devkit bios.

I'm actually just going to mod a va1 mobo now since I've done them a lot in the past. I would still be interested if someone has a tutorial for installing it on a va2 for future reference though.

 

VA2 should be the same layout for the BIOS chip.

 

http://www.assemblergames.com/forum...p-with-installing-a-mod-chip-on-a-VA2-1-board

 

Looks like I actually posted in that thread, but I wasn't working on a va2 at the time. I need to learn how to search this board better. This will make it a lot easier for me. Thank you Bad_Ad84!