make sure all of your connections are tight. Make sure all of your sodering is correct. make sure everthing that connects to the chip is secure, and the wires that go to your switch are secure. put your switch =(mod chip on, flash protect off, bank 2). If all goes well, you will see a flashbios 3.0.3 screen. This is a bios, that allows you to flash a hacked bios like X2_5023.
Flashing basically means copying. If bank 1 makes your xbox flash red/green and reset, then you have a bad bios flash in that bank. Switch to bank 2 and reflash the bios.