I had similar problems and bought the iFixIt Pro Tech Toolkit from Amazon. It was worth the money and it worked.
Successfully upgraded to 64GB. :-)
I originally tried to do this upgrade using Justech tool kit, I couldn’t pass the first few steps as their TR6 wouldn’t work. So I bought the iFixIt Pro Tech Toolkit as well as the iFixIt Magnetic Mat and flew through the upgrade.
Quando lo avranno fatto, sarai in grado di visualizzare un grafico della reputazione guadagnata nel tempo da loro.
Ecco un'anteprima di come il grafico apparirà:
Ancora nessuna reputazione acquisita.