Tip: opening the clamshell all the way gives more flex cable to work with during this part of the repair when reconnecting and disconnecting the ribbon cable.

sounds like a softbrick, which cannot be undone at this time. sorry for your loss pal :(

Wanted to know what DAC they used… Pretty disappointed no ICs are showcased, isn’t that the whole point of these teardowns?

Unfortunately, the Micro-B port in the Sprint/4G version of the SII is soldered directly to the logic board, as seen here, as circled in red.

To replace the USB port on this specific board, you will need a soldering iron, decent micro soldering skills and most importantly, the spare part and a lot of patience.

I would suggest upgrading to a newer device at this point, or just taking it to your local repair shop unless you already know what you’re doing.

USB-C is for computers, phones and external accessories alike. This device only uses USB for power, so a C port would be too big and more costly to implement than a normal USB micro B port.

dirt can get trapped around or under the trackpad, causing touch malfunctions. removing this dirt usually fixes touch issues and maybe sometimes a click issue if dirt is under the trackpad

A1342 macbook does not have the right controller to support sata III

Use a longer, sturdier screw driver. Either that or the screws have been thread locked in too tight at the factory. Apply more pressure. I mean, way more like, medium-hard pressure. if you don't care that much, apply hard pressure (If you're desperate apply even harder, just not so much it cracks the glass). Pressure is what holds the screwdriver in the screw, prevents it from slipping and stripping the screw! This is probably bad advice... I know.

They are all 100% Identical. You were probably looking at a different model, or Apple has entered the wrong information... Hey, It happens...

YES! Only use the battery on a macbook when you can't plug it in and at least once every month put it on battery power so it keeps the electrons moving in the battery!