Hopefully this will help since I had problems also at first.
TURN OFF YOUR PHONE!!!!!!!!! Then follow the instructions
.
Also I made a folder on my desktop and "saved" the update folder. I named the update.....ready????........."Update".
I then copy and pasted this to the microsd card without unzipping it then TURNED OFF MY PHONE and did the rest.
Phone is MUCH faster but after playing with it for 4-5 hours the battery drained down to "0" but so did my wifes that was not updated BUT after recharging it seems to hold much better now.
Satillete seems good and my tracking of my location has always been right on to the foot I think.......
Larry