Can OS Updates be Downloaded onto SD Card?

I have only about 50MB of storage space left on my device, but I have lots of room on my 16GB SD card. Will I be able to download 10.3.1 onto my SD cars storage or will I need to move files to clear up space on the phone itself?
Also, if I can download it onto the SD card, so I have to specific in settings where the download goes?
Thanks

Posted via CB10

You will be to free up some space on your device to accommodate the OS update I'm afraid

Posted via CB10

You'll need free Device Memory to accommodate the update. There aren't any options.