Okay I have flashed four tsops now, all working, some after a little more effort than others, and tomorrow I am doing another friends. I would like to know when I use evolution x to flash the tsop AUF style, I want to use a switch just to keep things safe. Half original, half 4977. So I have to make a bios 512 correct, then a vcc-ground-a19. Then flash one side of the chip. If anyone can help with this and especially if I have something wrong could someone let me know.

Just make your 1MB bios like this. 512 Original + 512 4977. After the flash is done, remove the motherboard and solder on the switch.

solder you switch first

its safer to solder the switch first, then flash with half a bios, that way you only have to open up your xbox once anyway

is there a tutorial on how to put one swith in to switch from retail bios to x2.
i want to flash half with x2 4799. so my bios would be oem+oem+x2 4799+x2 4799
i wanted a diagram on what points to solder and what side to flash so i could still use live if i wanted.
thanks