I HAD HEAPS OF TROUBLE UPDATING TO V4.0.HAD TO INSTALL V3.5 FIRST(THE VERSION I WAS USING WAS V3.1.HERE IS WERE IT STUMPED ME.IF YOU FORMAT THE FLASH CARD IN THE ECLIPSE IT FORMATS IT TO FAT32 AND MADE IT UNREADABLE.SO I HAD TO PUT THE FLASH CARD IN MY PC AND CHANGE FORMAT TO FAT(NOT32).AFTER I STOPED USING THE ECLIPSE TO FORMAT EVERYTHING WENT SMOOTH