The headphonejack, the mutebutton and the on/off switch were out of order.
The process was quite clear (except the mute-switch) but to get those tiny screws back into place was terrible, used one hour for one screw near the muteswitch.. I found out that I needed a little magnet to let the screw hang under the philips screwdriver. I took the bike, full speed, to a hobby/model shop in my neighbourhood in Oslo and they gave me a tiny magnet, 4mm x 2mm x 1mm, I got it just before closingtime on saturday and I could finish the repair within half an hour. The magnet is small enough not to disturb and strong enough to make the screwdriver magnetic.
I could not repair the nutebutton, This part is complicated and the instruction and pictures could be better and more clear
Together with the screwdriver you could sell such a little magnet. The screws are very easily to remove when taking apart and as easily to get back into place when the magnet sticks to the screwdriver just 1 or 2 cm above the screw. I would never have managed without.. ..or loosing my temper completely.
iPhone 3G/3GS Headphone Jack Assembly
iPhone 3G and 3GS Mute Button
iPhone 3G and 3GS Power Button
Phillips #00 Screwdriver