Thank you for posting this.
After reading the news that the new 3DS update blocks all flashcarts, I was worried; there are some eShop games I want to buy.
So this method should allow me to continue using my "R4i Gold 3DS Wood R4i 3DS flashcard" on my 3DSXL, even with the most recent 3DS updates, yes?
How do you recommend "cutting" the line? Just with a sharp knife?