Well im not entire sure about having the same solution as his, though base on his post the error he gets is same as mine when booting.
about rpi-update, i used that command but it says i already have the newer version but still.
PS: im a complete newbie in raspi and just started, so i dont really understand how to update the and what you mean by downloading it. Sorry
Am i supposed to download everything in there and replace the once inside the sd card?