LoL well you will only notice a difference if the bios is Xecuter2 or If its a EvoX coloured Bios
Bios's arent friggin dasboards and none of the current mainstream bios's will change the LED Colour (Its people who mess with XBTool and custom bios's)
If you dont know how to solder an Xbox is a bad place to start . You can solder the Xbit in three ways
With Wires - Its a cradle with 11 wires
With The HeaderPins - The long pointy things attached to the chip (shite on the Xbit , dont do a header installation)
Quick Solder - Soldering the Pogo pins (i think lol, never looked into it)
Soldering has benefits because the modchip wont come loose but , and this is a big but. You could kill your xbox if you dont know what your doing
You need the correct tools
15W Soldering iron
1MM Tip for that (Pencil)
30AWG Solder (easier)
Flux (Makes solder stick)
Solder Braid (for removing the Solder out of LPC Holes , i have loads of solder braid its invaluable for any pro installer)
FibreGlass Pen (for D0 Preperation)
MultiMeter (For checking continuity in your points)
I would reccomend the wire for the XBiT cause the headers are shite and ive never done a quick solder so i cant comment on that
With the wires just solder to the holes with not much solder at all , (the wires are pretinned) and solder the D0 . Sounds simple but the amount of people ive seen trying to install a mod with there hands shaking
By the time youve bought all the tools and risk your Xbox's life i would say its not beneficial to most people . if you havent scrapped your D0 you will never get a decent pogo connection go and buy one the Xbox Motherboard is covered in laquer which is why your getting a crap connection