Good day! I have bought an S3, 1 year ago and yesterday evening, it asked me for a system update which i pressed install. It did asked me to reboot my phone and I actually saw the upgrade icon (like a robot saying its 100% complete), however, when i restarted, it showed the samsung sign, and until now, the samsung sign is still showing. I tried to remove the battery only this morning and it is still not rebooting. What shall I do then?