Hi, Im completely new to all this, installed leo4all v3 2 days ago and works perfectly but I need to update and decided to try what you suggest. I downloaded the combo update, backed up the extensions folder and did everything as instructed. The first time I tried to manually remove the Intel kext but the screen froze before I managed. The next time I used terminal, but had the exact same effect. The screen froze when the install process was at about 10% and terminal said access was denied. My account has admin privileges so I cant understand why it was denied. Also, does the freezing have to do with the file not being deleted in time, or is it something else?