You don't need to flash the chip. You're getting the Purple EvoX logo, that means the chip is already flashed. If the chip is white, it should have started with Cromwell Linux, if the chip is blue it came preflashed. When you get your soldering all lined out, you'll only need to install a dashboard and you'll be good to go.
You only need to flash the chip if the current bios doesn't have a feature that you want (ability to use large 137+GB HD's, VGA bios, etc). Don't flash the chip if you don't have to.
Like I said in the other post, go over each of your solder points again. Actually reflow each point, especially d0. Make sure you didn't splash solder anywhere, even a tiny tiny blotch can bridge points on the motherboard (its unlikely, but possible). Also, make sure you used the install tutorial for the v1.0 box. I can't remember if there is a different procedure for v1.0 versus v1.1-1.5, but double-check.
If you get the soldering finished, use Slayer's and report back what it says for the bios. More than likely you'll be good with what's already installed.