Exchanging chip in V7

[fratres]

Seaneyb, thanx a lot for helping me out! So do you think if I use a Duo2 (btw, are there any reports on problems and are there any major functions except non-flashability, autoboot and homebrew-stuff that duo2 does not have compared to MI/Crystal?) I could just connect the needed wires (including S-wire and PWR), and everything works? Did you check the Magic-Install-Link I posted? S has a different soldering point, you think that doesn´t matter? And could I possibly leave the spare wires in and just cut them directly above the MB-connection-point? And what about the W-wire of Crystal and MI, would I have to change my old W-wire-point?
Of course you are totally right that I should ask someone to do the install, but I don´t know anyone with soldering experiences personally, and the pro-installers over here don´t accept used chips and charge full installation fee even if wires are already installed. And also it´s kind of a challenge to do it yourself, don´t you think? So if you could possibly answer my questions? Thank you so much!