This post / method is now outdated – It is now easier and quicker than ever to update directly to 6.60 CFW. I’ll leave this post online for those that want to do it this way of just need the information.
Click here for the new guide / updated method
I’ve added a step by step guide so those of you running custom firmware 3.52 M33-3 or above can update to 3.90 M33-2 and enjoy some of the new features available.
