I have a Galaxy S2 that became a bit slow so i decided to upgrade to ICS as i know it is a bit faster than Gingerbread. I decided to upgrade via KIES. It has been a while since my last update (about 7 months) Now i am stuck at 71% for the last 6 hours. I am afraid to lose all my data if i unplug the USB to retry does anyone know if this is normal? Or any tips on what should i do?