Step Six.
Flashing the TSOP.
You are about to find out how good of a job you did soldering. Make sure you use the right bios for your system there are a few things to think of different Xbox models have a different sized TSOP. In this case please refer to (
http://www.xbox-scene.com/modchips.php) for more information.
In the Evolution X bios settings highlight the Flash bios option and select your bios file. Before we move on, this step make potentially render your system useless.
Do not be discouraged just make sure you have the proper bios for your console and if you are modifying it make sure it is correct. Finally Flash your TSOP. If soldered correctly it will say press Y to continue, if not Device Not Writable.
Some people have successfully flashed their TSOP by just soldering the 2 top points, others with 3 including the one below. I myself have always used all 3 points.