IT WORKED - OK here is the problem guys - no doubt about it.
For those with white screen crashes - the card you're using for SKY is now corrupt. You need a new card - what I did was swap the internal 3ds msd with the one I was using with sky. I used that MiniAide Fat32 formatting tool to delete and create partition FAT 32 for both. Not sure you need that program but worked for me. Then I did the steps outlined on the updated first page and it worked. 2nd slot as expected. Again - the solution is this ( AND i SUGGEST IT"S POSTED ON THE FRONT PAGE) - YOU NEED A NEW FRESH CARD IN SKY. swap the sky 3ds card that doesn't work with the 3ds internal. Use that program to delete and create new partitions on both, saving the files from your old 3ds card to your desktop so you can easily transfer them over and then do the steps outlined