so im online with exbls and and im trying to update the tu too tu15 (ive always had trouble updating it even in freestyle and doing it manually it just stays on tu8) it sais update available, so i download it, then it has a black screen for a second then it pops up with updata available, and i check to see if the tu is there after i download it and it is, it just keeps on downloading it though because it thinks it isnt installed.