Ok so im trying o install 10.5.1 but before i reach the instalation the computer restarts, the last line is the firewire security thing.

Also, i tried installing iATKOS with AMD patch, and i success installing it, but got the same problem AFTER installing, i couldnt even get to single user mode, but.....in my tiger instalation i changed the kernel mach_blabla file...and system, ata and other kexts and it wont reboot anymore, but Im still getting the firewire error.

So i think, when trying to install Zephyroth 10.5.1, and getting the firewire issue, it must have nothing to do with the firewire, but, i dont know any clues?