I don't get it! Why install High Sierra when the next step is to erase the hard drive? Surely the install files will be wiped as well?

Take special care with the small Pillips screw to the left of the drive. The strong-ish magnet of the lid catch is likely to snatch the screw fron your driver and allow it to fall into the space below and it is a complete pain to fish out! Ask me how I know!

Take GREAT care with the left ambient light sensor cable it is very delicately attached!

Nothing black in my A1150, just beige and VERY fragile!

Treat the translucent "plastic" sheath VERY carefully! It would be more durable if it was made of rice paper!!

THIS little component gave me the most aggravation of the whole job! It's too small to get even needle-nosed pliers on, so I ended up spearing it with a dentist's pick and prying it out.

The fan was actually stuck to the cooling fins of the heat-sink. I had to peel up the black tape and VERY CAREFULLY pry the two apart.

Note that on the two-button sub-frame (the left-hand piece secured by two of the four screws in Step 13) there are two tiny locating studs which must be aligned on the replacement wire ribbon.

Step 9: This screw was missing on my iPod. It has been replaced by a rivet.

Agreed! Two hugely tricky steps here. The larger of the two components really did NOT want to come away from the hard drive case (I was afraid of tearing the ribbon cable), AND I accidentally pulled the Bluetooth ribbon out from the case. Heck of a job to replace it! Anyone know where I can get the opaque plastic sheath for the Bluetooth board?